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Delta potential

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906:. Qualitatively, it corresponds to a potential which is zero everywhere, except at a single point, where it takes an infinite value. This can be used to simulate situations where a particle is free to move in two regions of space with a barrier between the two regions. For example, an electron can move almost freely in a conducting material, but if two conducting surfaces are put close together, the interface between them acts as a barrier for the electron that can be approximated by a delta potential. 3130: 1646: 5655: 2006: 4128: 929: 2894: 1396: 3731:, that is, a barrier has the same probability of reflecting the particle as a well. This is a significant difference from classical mechanics, where the reflection probability would be 1 for the barrier (the particle simply bounces back), and 0 for the well (the particle passes through the well undisturbed). 4008:
The above model is one-dimensional while the space around us is three-dimensional. So, in fact, one should solve the Schrödinger equation in three dimensions. On the other hand, many systems only change along one coordinate direction and are translationally invariant along the others. The Schrödinger
2619: 3971: 4001:(STM) relies on this tunneling effect. In that case, the barrier is due to the air between the tip of the STM and the underlying object. The strength of the barrier is related to the separation being stronger the further apart the two are. For a more general model of this situation, see 3994:. Often, the surfaces of such materials are covered with oxide layers or are not ideal for other reasons. This thin, non-conducting layer may then be modeled by a local delta-function potential as above. Electrons may then tunnel from one material to the other giving rise to a current. 5005: 4771: 3725: 1820: 2714: 3002: 3495: 2633: 1797:
A second relation can be found by studying the derivative of the wavefunction. Normally, we could also impose differentiability at the origin, but this is not possible because of the delta potential. However, if we integrate the Schrödinger equation around
4624: 4272: 2406: 1098: 2399: 3116: 3737: 4800: 4629: 3506: 1641:{\displaystyle \psi (x)={\begin{cases}\psi _{\text{L}}(x)=A_{\text{r}}e^{ikx}+A_{\text{l}}e^{-ikx},&{\text{ if }}x<0,\\\psi _{\text{R}}(x)=B_{\text{r}}e^{ikx}+B_{\text{l}}e^{-ikx},&{\text{ if }}x>0,\end{cases}}} 2248: 1314: 106: 1793: 2901: 3314: 2131: 2001:{\displaystyle -{\frac {\hbar ^{2}}{2m}}\int _{-\varepsilon }^{+\varepsilon }\psi ''(x)\,dx+\int _{-\varepsilon }^{+\varepsilon }V(x)\psi (x)\,dx=E\int _{-\varepsilon }^{+\varepsilon }\psi (x)\,dx.} 2889:{\displaystyle \psi (x)={\begin{cases}\psi _{\text{L}}(x)=A_{\text{l}}e^{\kappa x},&{\text{ if }}x\leq 0,\\\psi _{\text{R}}(x)=B_{\text{r}}e^{-\kappa x},&{\text{ if }}x\geq 0.\end{cases}}} 5446: 3197: 4083: 1389: 5426: 5265: 4507: 1167: 4144: 970: 2257: 3018: 4498: 4419: 5120: 4387: 5184: 5038: 4466: 2690:
is imaginary, and the wave functions which were oscillating for positive energies in the calculation above are now exponentially increasing or decreasing functions of
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is positive. The delta has been defined to occur at the origin for simplicity; a shift in the delta function's argument does not change any of the following results.
917:, which is obtained if one maintains the product of the width of the well and the potential constant while decreasing the well's width and increasing the potential. 5304: 3980:
The calculation presented above may at first seem unrealistic and hardly useful. However, it has proved to be a suitable model for a variety of real-life systems.
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materials. In the bulk of the materials, the motion of the electrons is quasi-free and can be described by the kinetic term in the above Hamiltonian with an
2136: 873: 2614:{\displaystyle {\begin{cases}A_{r}+A_{l}-B_{r}-B_{l}&=0,\\-A_{r}+A_{l}+B_{r}-B_{l}&={\frac {2m\lambda }{ik\hbar ^{2}}}(A_{r}+A_{l}).\end{cases}}} 580: 124: 3966:{\displaystyle T=|t|^{2}=1-R={\cfrac {1}{1+{\cfrac {m^{2}\lambda ^{2}}{\hbar ^{4}k^{2}}}}}={\cfrac {1}{1+{\cfrac {m\lambda ^{2}}{2\hbar ^{2}E}}}}.} 36: 3503:
of the model, the amplitudes for incidence from the right are the same as those from the left. The result is that there is a non-zero probability
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The graph of the bound state wavefunction solution to the delta function potential is continuous everywhere, but its derivative is not defined at
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In general, due to the presence of the delta potential in the origin, the coefficients of the solution need not be the same in both half-spaces:
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must be negative, that is, the bound state only exists for the well, and not for the barrier. The Fourier transform of this wave function is a
5675: 5000:{\displaystyle d_{\pm }(\lambda )={\frac {1}{2}}q(\lambda +1)\pm {\frac {1}{2}}\left\{q^{2}(1+\lambda )^{2}-4\lambda q^{2}\left\right\}^{1/2},} 353: 4766:{\displaystyle {\begin{vmatrix}q-d&qe^{-dR}\\q\lambda e^{-dR}&q\lambda -d\end{vmatrix}}=0,\quad {\text{where }}E=-{\frac {d^{2}}{2}}.} 3720:{\displaystyle R=|r|^{2}={\cfrac {1}{1+{\cfrac {\hbar ^{4}k^{2}}{m^{2}\lambda ^{2}}}}}={\cfrac {1}{1+{\cfrac {2\hbar ^{2}E}{m\lambda ^{2}}}}}} 536: 5630: 3988: 459: 4432:(shown in brown in the diagram). Keeping in mind the relationship of this model with its three-dimensional molecular counterpart, we use 1350: 5189: 119: 5152:(shown in green in the diagram). They represent an approximation of the two lowest discrete energy states of the three-dimensional 920:
This article, for simplicity, only considers a one-dimensional potential well, but analysis could be expanded to more dimensions.
5695: 5690: 2997:{\displaystyle {\begin{cases}A_{\text{l}}=B_{\text{r}}={\sqrt {\kappa }},\\\kappa =-{\frac {m\lambda }{\hbar ^{2}}},\end{cases}}} 208: 3490:{\displaystyle t={\cfrac {1}{1-{\cfrac {m\lambda }{i\hbar ^{2}k}}}},\quad r={\cfrac {1}{{\cfrac {i\hbar ^{2}k}{m\lambda }}-1}}.} 315: 295: 5369:. For these specific parameters, there are many interesting properties that occur, one of which is the unusual effect that the 5186:
and are useful in its analysis. Analytical solutions for the energy eigenvalues for the case of symmetric charges are given by
866: 163: 1122: 285: 4005:. The delta function potential barrier is the limiting case of the model considered there for very high and narrow barriers. 555: 4131:
The symmetric and anti-symmetric wavefunctions for the double-well Dirac delta function model with "internuclear" distance
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The double-well Dirac delta function models a diatomic hydrogen molecule by the corresponding Schrödinger equation:
3253:. To find the amplitudes for reflection and transmission for incidence from the left, we put in the above equations 5685: 5659: 5441: 4277: 4093: 859: 511: 3220:
The quantum case can be studied in the following situation: a particle incident on the barrier from the left side
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One obtains a relation between the coefficients by imposing that the wavefunction be continuous at the origin:
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The "+" case corresponds to a wave function symmetric about the midpoint (shown in red in the diagram), where
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equation may then be reduced to the case considered here by an Ansatz for the wave function of the type
2694:(see above). Requiring that the wave functions do not diverge at infinity eliminates half of the terms: 1321: 914: 243: 228: 4392: 155: 5138:. Correspondingly, the "−" case is the wave function that is anti-symmetric about the midpoint, where 4088:
Alternatively, it is possible to generalize the delta function to exist on the surface of some domain
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charges, and for that matter the three-dimensional molecular problem, the solutions are given by a
4619:{\displaystyle \psi (x)=Ae^{-d\left|x+{\frac {R}{2}}\right|}+Be^{-d\left|x-{\frac {R}{2}}\right|}.} 3009: 659: 467: 385: 213: 193: 145: 5639:
For the 3-dimensional case look for the "delta shell potential"; further see K. Gottfried (1966),
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Lange, Rutger-Jan (2012), "Potential theory, path integrals and the Laplacian of the indicator",
5416: 5397: 5319: 5272: 5155: 1325: 380: 305: 238: 150: 5010: 4439: 4267:{\displaystyle -{\frac {\hbar ^{2}}{2m}}{\frac {d^{2}\psi (x)}{dx^{2}}}+V(x)\psi (x)=E\psi (x),} 1093:{\displaystyle -{\frac {\hbar ^{2}}{2m}}{\frac {d^{2}\psi (x)}{dx^{2}}}+V(x)\psi (x)=E\psi (x),} 5626: 5605: 5387: 2394:{\displaystyle -{\frac {\hbar ^{2}}{2m}}ik(-A_{r}+A_{l}+B_{r}-B_{l})+\lambda (A_{r}+A_{l})=0.} 887: 814: 789: 729: 724: 624: 590: 570: 168: 27: 5332: 3111:{\displaystyle E=-{\frac {\hbar ^{2}\kappa ^{2}}{2m}}=-{\frac {m\lambda ^{2}}{2\hbar ^{2}}}.} 5597: 5516: 954: 819: 809: 799: 699: 679: 664: 634: 502: 390: 5282: 5421: 1228:). In each of these parts the potential is zero, and the Schrödinger equation reduces to 1105: 844: 714: 694: 440: 280: 5593: 5512: 4776: 895: 779: 739: 719: 689: 669: 619: 585: 435: 425: 218: 4626:
Matching of the wavefunction at the Dirac delta-function peaks yields the determinant
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is the "internuclear" distance with Dirac delta-function (negative) peaks located at
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van Dijk, W.; Kiers, K. A. (1992). "Time delay in simple one-dimensional systems".
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is a formally adjustable parameter. From the single-well case, we can infer the "
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The boundary conditions thus give the following restrictions on the coefficients
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Dirac Delta function model which represents a one-dimensional version of the
2017:, the right-hand side of this equation vanishes; the left-hand side becomes 1309:{\displaystyle {\frac {d^{2}\psi }{dx^{2}}}=-{\frac {2mE}{\hbar ^{2}}}\psi ;} 101:{\displaystyle i\hbar {\frac {d}{dt}}|\Psi \rangle ={\hat {H}}|\Psi \rangle } 275: 2898:
From the boundary conditions and normalization conditions, it follows that
1788:{\displaystyle \psi (0)=\psi _{L}(0)=\psi _{R}(0)=A_{r}+A_{l}=B_{r}+B_{l},} 5654: 3203:
For positive energies, the particle is free to move in either half-space:
3129: 5564:"The Calculation of Exchange Forces: General Results and Specific Models" 3500: 654: 4099:
The delta function model is actually a one-dimensional version of the
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for the particle to be reflected. This does not depend on the sign of
928: 4501: 2243:{\displaystyle \int _{-\varepsilon }^{+\varepsilon }\psi ''(x)\,dx=.} 1113: 5601: 5279:. Note that the lowest energy corresponds to the symmetric solution 5503: 4126: 3128: 2631: 927: 5588:(6). American Association of Physics Teachers (AAPT): 520–527. 5040:. For the case of equal charges (symmetric homonuclear case), 4111:
The delta function model becomes particularly useful with the
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List of quantum-mechanical systems with analytical solutions
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In any one-dimensional attractive potential there will be a
2990: 2882: 2607: 2126:{\displaystyle -{\frac {\hbar ^{2}}{2m}}+\lambda \psi (0),} 1634: 5466:"quantum mechanics - Wave function with a delta potential" 5427:
Particle in a one-dimensional lattice (periodic potential)
3199:. Dashed: classical result. Solid line: quantum mechanics. 5362:. Thus, one has a non-trivial bound state solution with 3929: 3907: 3893: 3881: 3840: 3811: 3797: 3785: 3689: 3664: 3650: 3638: 3597: 3568: 3554: 3542: 3457: 3432: 3424: 3412: 3368: 3353: 3339: 3327: 3217:. It may be scattered at the delta-function potential. 4638: 3932: 3910: 3896: 3884: 3843: 3814: 3800: 3788: 3692: 3667: 3653: 3641: 3600: 3571: 3557: 3545: 3460: 3435: 3427: 3415: 3371: 3356: 3342: 3330: 5335: 5285: 5192: 5158: 5053: 5013: 4803: 4779: 4632: 4510: 4474: 4442: 4395: 4280: 4147: 4015: 3740: 3509: 3317: 3154: 3021: 2904: 2717: 2409: 2260: 2139: 2023: 1823: 1673: 1399: 1353: 1234: 1125: 973: 39: 3983:
One such example regards the interfaces between two
3192:{\displaystyle {\frac {m\lambda ^{2}}{2\hbar ^{2}}}} 3141:) probability of a delta potential well. The energy 4078:{\displaystyle \Psi (x,y,z)=\psi (x)\phi (y,z)\,\!} 5354: 5298: 5259: 5178: 5114: 5032: 4999: 4785: 4765: 4618: 4492: 4460: 4413: 4381: 4266: 4077: 3965: 3719: 3489: 3191: 3110: 2996: 2888: 2613: 2393: 2242: 2125: 2000: 1787: 1640: 1383: 1308: 1161: 1092: 100: 4074: 16:Model of an energy potential in quantum mechanics 1384:{\displaystyle k={\frac {\sqrt {2mE}}{\hbar }}.} 5625:(2nd ed.). Prentice Hall. pp. 68–78. 5260:{\displaystyle d_{\pm }=q+W(\pm qRe^{-qR})/R,} 1658:represents a wave traveling to the right, and 1648:where, in the case of positive energies (real 5403:Particle in a spherically symmetric potential 1214:The potential splits the space in two parts ( 867: 8: 3307:even though we do not have any equations in 95: 69: 5325:One of the most interesting cases is when 3286:(no incoming particle from the right) and 874: 860: 18: 5502: 5340: 5334: 5320:Lambert W function § Generalizations 5290: 5284: 5246: 5231: 5197: 5191: 5169: 5164: 5159: 5157: 5093: 5085: 5058: 5052: 5024: 5012: 4984: 4980: 4950: 4939: 4918: 4899: 4877: 4857: 4826: 4808: 4802: 4778: 4749: 4743: 4729: 4685: 4659: 4633: 4631: 4596: 4578: 4551: 4533: 4509: 4473: 4441: 4394: 4356: 4321: 4279: 4207: 4180: 4173: 4157: 4151: 4146: 4073: 4014: 3941: 3933: 3919: 3911: 3904: 3897: 3885: 3878: 3859: 3849: 3844: 3830: 3820: 3815: 3808: 3801: 3789: 3782: 3761: 3756: 3747: 3739: 3701: 3693: 3676: 3668: 3661: 3654: 3642: 3635: 3616: 3606: 3601: 3587: 3577: 3572: 3565: 3558: 3546: 3539: 3530: 3525: 3516: 3508: 3461: 3444: 3436: 3429: 3428: 3416: 3409: 3380: 3372: 3357: 3350: 3343: 3331: 3324: 3316: 3180: 3165: 3155: 3153: 3096: 3081: 3071: 3048: 3038: 3031: 3020: 2976: 2962: 2939: 2930: 2917: 2905: 2903: 2865: 2848: 2838: 2816: 2791: 2777: 2767: 2745: 2733: 2716: 2592: 2579: 2563: 2539: 2528: 2515: 2502: 2489: 2461: 2448: 2435: 2422: 2410: 2408: 2376: 2363: 2341: 2328: 2315: 2302: 2270: 2264: 2259: 2178: 2152: 2144: 2138: 2081: 2056: 2033: 2027: 2022: 1988: 1967: 1959: 1942: 1909: 1901: 1887: 1861: 1853: 1833: 1827: 1822: 1776: 1763: 1750: 1737: 1715: 1693: 1672: 1614: 1594: 1584: 1565: 1555: 1533: 1508: 1488: 1478: 1459: 1449: 1427: 1415: 1398: 1360: 1352: 1292: 1275: 1260: 1242: 1235: 1233: 1124: 1033: 1006: 999: 983: 977: 972: 87: 76: 75: 61: 46: 38: 5641:Quantum Mechanics Volume I: Fundamentals 1162:{\displaystyle V(x)=\lambda \delta (x),} 5545:Dimensional Scaling in Chemical Physics 5543:, J.S. Avery, and O. Goscinski (eds.), 5457: 4443: 4154: 3938: 3846: 3673: 3574: 3441: 3377: 3177: 3093: 3035: 2973: 2560: 2267: 2030: 1830: 1373: 1289: 980: 43: 26: 5047:, and the pseudo-quadratic reduces to 3015:The energy of the bound state is then 4119:, as shown in the following section. 1119:The delta potential is the potential 7: 3734:The probability for transmission is 2651:. To find its energy, note that for 953:of a particle in one dimension in a 5558:T. C. Scott, J. F. Babb, 4493:{\displaystyle 0<\lambda <1} 4408: 4016: 406:Sum-over-histories (path integral) 92: 66: 22:Part of a series of articles about 14: 5623:Introduction to Quantum Mechanics 5329: â‰€ 1, which results in 4414:{\displaystyle 0<R<\infty } 4107:method developed by the group of 5653: 5115:{\displaystyle d_{\pm }=q\left.} 1207:Solving the Schrödinger equation 898:mathematically described by the 4793:is found to be governed by the 4728: 3402: 2250:Substituting the definition of 5491:Journal of High Energy Physics 5243: 5215: 4962: 4956: 4896: 4883: 4851: 4839: 4820: 4814: 4520: 4514: 4290: 4284: 4258: 4252: 4240: 4234: 4228: 4222: 4195: 4189: 4070: 4058: 4052: 4046: 4037: 4019: 3757: 3748: 3526: 3517: 3299:(transmission), and solve for 2828: 2822: 2757: 2751: 2727: 2721: 2598: 2572: 2382: 2356: 2347: 2292: 2234: 2231: 2222: 2208: 2199: 2188: 2175: 2169: 2117: 2111: 2099: 2096: 2090: 2071: 2065: 2049: 1985: 1979: 1939: 1933: 1927: 1921: 1884: 1878: 1727: 1721: 1705: 1699: 1683: 1677: 1545: 1539: 1439: 1433: 1409: 1403: 1153: 1147: 1135: 1129: 1084: 1078: 1066: 1060: 1054: 1048: 1021: 1015: 909:The delta potential well is a 556:Relativistic quantum mechanics 88: 81: 62: 1: 5676:Quantum mechanical potentials 5643:, ch. III, sec. 15. 4382:{\displaystyle V(x)=-q\left,} 4003:Finite potential barrier (QM) 3999:scanning tunneling microscope 1347:is related to the energy by 596:Quantum statistical mechanics 5621:Griffiths, David J. (2005). 5570:, 99, pp. 2841–2854, (1993). 5179:{\displaystyle {\ce {H2^+}}} 2711:. The wave function is then 2254:into this expression yields 1318:linear differential equation 5582:American Journal of Physics 5408:Quantum harmonic oscillator 4274:where the potential is now 3004:from which it follows that 1664:one traveling to the left. 566:Quantum information science 5712: 5442:Laplacian of the indicator 5033:{\displaystyle d=d_{\pm }} 4461:{\displaystyle \hbar =m=1} 4094:Laplacian of the indicator 5373:is unity at zero energy. 4504:" for the solution to be 5562:and John D. Morgan III, 5371:transmission coefficient 5007:which has two solutions 601:Quantum machine learning 354:Wheeler's delayed-choice 5696:Exactly solvable models 5521:10.1007/JHEP11(2012)032 5437:Holstein–Herring method 5355:{\displaystyle d_{-}=0} 3976:Remarks and application 1197:delta potential barrier 311:Leggett–Garg inequality 5470:Physics Stack Exchange 5432:Hydrogen molecular ion 5356: 5300: 5261: 5180: 5116: 5034: 5001: 4787: 4767: 4620: 4494: 4462: 4415: 4383: 4268: 4138: 4123:Double delta potential 4079: 3967: 3721: 3491: 3231:. It may be reflected 3200: 3193: 3112: 2998: 2890: 2644: 2615: 2395: 2244: 2127: 2002: 1789: 1642: 1385: 1324:, whose solutions are 1310: 1163: 1094: 932: 924:Single delta potential 102: 5393:Finite potential well 5357: 5301: 5299:{\displaystyle d_{+}} 5262: 5181: 5117: 5035: 5002: 4788: 4768: 4621: 4495: 4463: 4416: 4384: 4269: 4130: 4117:Hydrogen molecule ion 4080: 3968: 3722: 3492: 3263:(incoming particle), 3194: 3132: 3113: 2999: 2891: 2635: 2616: 2396: 2245: 2128: 2003: 1790: 1643: 1386: 1322:constant coefficients 1311: 1164: 1095: 935:The time-independent 931: 915:finite potential well 296:Elitzur–Vaidman 286:Davisson–Germer 103: 5691:Schrödinger equation 5662:at Wikimedia Commons 5547:, Springer, (1992). 5333: 5283: 5190: 5156: 5051: 5011: 4801: 4777: 4630: 4508: 4472: 4440: 4393: 4278: 4145: 4109:Dudley R. Herschbach 4013: 3738: 3507: 3315: 3152: 3019: 2902: 2715: 2407: 2258: 2137: 2021: 1821: 1671: 1397: 1351: 1232: 1189:delta potential well 1182:Dirac delta function 1123: 971: 937:Schrödinger equation 904:generalized function 900:Dirac delta function 561:Quantum field theory 473:Consistent histories 110:Schrödinger equation 37: 5594:1992AmJPh..60..520V 5513:2012JHEP...11..032L 5174: 4105:dimensional scaling 3997:The operation of a 3931: 3909: 3895: 3883: 3842: 3813: 3799: 3787: 3691: 3666: 3652: 3640: 3599: 3570: 3556: 3544: 3459: 3434: 3426: 3414: 3370: 3355: 3341: 3329: 3010:Lorentzian function 2160: 2089: 2064: 1975: 1917: 1869: 1805:, over an interval 1326:linear combinations 1195:is negative, and a 349:Stern–Gerlach 146:Classical mechanics 5417:hydrogen-like atom 5398:Particle in a ring 5352: 5296: 5257: 5176: 5160: 5112: 5030: 4997: 4783: 4763: 4713: 4616: 4490: 4458: 4411: 4379: 4264: 4139: 4075: 3963: 3956: 3951: 3926: 3890: 3871: 3866: 3837: 3794: 3717: 3713: 3708: 3686: 3647: 3628: 3623: 3594: 3551: 3499:Due to the mirror 3487: 3480: 3469: 3454: 3421: 3395: 3390: 3365: 3336: 3201: 3189: 3137:) and reflection ( 3108: 2994: 2989: 2886: 2881: 2645: 2611: 2606: 2391: 2240: 2140: 2123: 2077: 2052: 1998: 1955: 1897: 1849: 1785: 1638: 1633: 1381: 1306: 1159: 1090: 933: 537:Von Neumann–Wigner 517:Objective-collapse 316:Mach–Zehnder 306:Leggett inequality 301:Franck–Hertz 151:Old quantum theory 98: 5686:Scattering theory 5658:Media related to 5632:978-0-13-111892-8 5388:Particle in a box 5306:. In the case of 5163: 4865: 4834: 4786:{\displaystyle d} 4758: 4732: 4604: 4559: 4364: 4329: 4214: 4171: 4103:according to the 3958: 3953: 3930: 3908: 3894: 3882: 3873: 3868: 3841: 3812: 3798: 3786: 3715: 3710: 3690: 3665: 3651: 3639: 3630: 3625: 3598: 3569: 3555: 3543: 3482: 3471: 3458: 3433: 3425: 3413: 3397: 3392: 3369: 3354: 3340: 3328: 3311:. The result is 3187: 3103: 3063: 2982: 2944: 2933: 2920: 2868: 2841: 2819: 2794: 2770: 2748: 2570: 2284: 2047: 1847: 1617: 1587: 1558: 1536: 1511: 1481: 1452: 1430: 1376: 1372: 1298: 1267: 1116:of the particle. 1040: 997: 888:quantum mechanics 884: 883: 591:Scattering theory 571:Quantum computing 344:Schrödinger's cat 276:Bell's inequality 84: 59: 28:Quantum mechanics 5703: 5657: 5636: 5614: 5613: 5577: 5571: 5556: 5550: 5538: 5532: 5531: 5506: 5486: 5480: 5479: 5477: 5476: 5462: 5368: 5361: 5359: 5358: 5353: 5345: 5344: 5305: 5303: 5302: 5297: 5295: 5294: 5271:is the standard 5266: 5264: 5263: 5258: 5250: 5242: 5241: 5202: 5201: 5185: 5183: 5182: 5177: 5175: 5173: 5168: 5161: 5148:, and is called 5147: 5132:, and is called 5131: 5121: 5119: 5118: 5113: 5108: 5104: 5103: 5102: 5098: 5097: 5063: 5062: 5046: 5039: 5037: 5036: 5031: 5029: 5028: 5006: 5004: 5003: 4998: 4993: 4992: 4988: 4979: 4975: 4974: 4970: 4969: 4968: 4955: 4954: 4923: 4922: 4904: 4903: 4882: 4881: 4866: 4858: 4835: 4827: 4813: 4812: 4795:pseudo-quadratic 4792: 4790: 4789: 4784: 4772: 4770: 4769: 4764: 4759: 4754: 4753: 4744: 4733: 4730: 4718: 4717: 4696: 4695: 4670: 4669: 4625: 4623: 4622: 4617: 4612: 4611: 4610: 4606: 4605: 4597: 4567: 4566: 4565: 4561: 4560: 4552: 4499: 4497: 4496: 4491: 4467: 4465: 4464: 4459: 4431: 4420: 4418: 4417: 4412: 4388: 4386: 4385: 4380: 4375: 4371: 4370: 4366: 4365: 4357: 4335: 4331: 4330: 4322: 4273: 4271: 4270: 4265: 4215: 4213: 4212: 4211: 4198: 4185: 4184: 4174: 4172: 4170: 4162: 4161: 4152: 4137: 4084: 4082: 4081: 4076: 3993: 3972: 3970: 3969: 3964: 3959: 3957: 3955: 3954: 3952: 3950: 3946: 3945: 3927: 3925: 3924: 3923: 3905: 3891: 3889: 3879: 3874: 3872: 3870: 3869: 3867: 3865: 3864: 3863: 3854: 3853: 3838: 3836: 3835: 3834: 3825: 3824: 3809: 3795: 3793: 3783: 3766: 3765: 3760: 3751: 3730: 3726: 3724: 3723: 3718: 3716: 3714: 3712: 3711: 3709: 3707: 3706: 3705: 3687: 3685: 3681: 3680: 3662: 3648: 3646: 3636: 3631: 3629: 3627: 3626: 3624: 3622: 3621: 3620: 3611: 3610: 3595: 3593: 3592: 3591: 3582: 3581: 3566: 3552: 3550: 3540: 3535: 3534: 3529: 3520: 3496: 3494: 3493: 3488: 3483: 3481: 3479: 3472: 3470: 3468: 3455: 3453: 3449: 3448: 3430: 3422: 3420: 3410: 3398: 3396: 3394: 3393: 3391: 3389: 3385: 3384: 3366: 3364: 3351: 3337: 3335: 3325: 3310: 3306: 3302: 3298: 3285: 3275: 3262: 3252: 3241: 3230: 3216: 3209: 3198: 3196: 3195: 3190: 3188: 3186: 3185: 3184: 3171: 3170: 3169: 3156: 3147: 3117: 3115: 3114: 3109: 3104: 3102: 3101: 3100: 3087: 3086: 3085: 3072: 3064: 3062: 3054: 3053: 3052: 3043: 3042: 3032: 3007: 3003: 3001: 3000: 2995: 2993: 2992: 2983: 2981: 2980: 2971: 2963: 2945: 2940: 2935: 2934: 2931: 2922: 2921: 2918: 2895: 2893: 2892: 2887: 2885: 2884: 2869: 2866: 2859: 2858: 2843: 2842: 2839: 2821: 2820: 2817: 2795: 2792: 2785: 2784: 2772: 2771: 2768: 2750: 2749: 2746: 2710: 2689: 2680: 2679: 2657: 2642: 2620: 2618: 2617: 2612: 2610: 2609: 2597: 2596: 2584: 2583: 2571: 2569: 2568: 2567: 2551: 2540: 2533: 2532: 2520: 2519: 2507: 2506: 2494: 2493: 2466: 2465: 2453: 2452: 2440: 2439: 2427: 2426: 2400: 2398: 2397: 2392: 2381: 2380: 2368: 2367: 2346: 2345: 2333: 2332: 2320: 2319: 2307: 2306: 2285: 2283: 2275: 2274: 2265: 2253: 2249: 2247: 2246: 2241: 2221: 2198: 2168: 2159: 2151: 2132: 2130: 2129: 2124: 2085: 2060: 2048: 2046: 2038: 2037: 2028: 2016: 2010:In the limit as 2007: 2005: 2004: 1999: 1974: 1966: 1916: 1908: 1877: 1868: 1860: 1848: 1846: 1838: 1837: 1828: 1816: 1804: 1794: 1792: 1791: 1786: 1781: 1780: 1768: 1767: 1755: 1754: 1742: 1741: 1720: 1719: 1698: 1697: 1663: 1657: 1651: 1647: 1645: 1644: 1639: 1637: 1636: 1618: 1615: 1608: 1607: 1589: 1588: 1585: 1576: 1575: 1560: 1559: 1556: 1538: 1537: 1534: 1512: 1509: 1502: 1501: 1483: 1482: 1479: 1470: 1469: 1454: 1453: 1450: 1432: 1431: 1428: 1390: 1388: 1387: 1382: 1377: 1362: 1361: 1346: 1339: 1333: 1315: 1313: 1312: 1307: 1299: 1297: 1296: 1287: 1276: 1268: 1266: 1265: 1264: 1251: 1247: 1246: 1236: 1227: 1220: 1202: 1194: 1179: 1168: 1166: 1165: 1160: 1111: 1103: 1099: 1097: 1096: 1091: 1041: 1039: 1038: 1037: 1024: 1011: 1010: 1000: 998: 996: 988: 987: 978: 966: 952: 876: 869: 862: 503:Superdeterminism 156:Bra–ket notation 107: 105: 104: 99: 91: 86: 85: 77: 65: 60: 58: 47: 19: 5711: 5710: 5706: 5705: 5704: 5702: 5701: 5700: 5666: 5665: 5660:Delta potential 5650: 5633: 5620: 5617: 5602:10.1119/1.16866 5579: 5578: 5574: 5557: 5553: 5541:D.R. Herschbach 5539: 5535: 5488: 5487: 5483: 5474: 5472: 5464: 5463: 5459: 5455: 5422:Ring wave guide 5379: 5363: 5336: 5331: 5330: 5314:of the Lambert 5286: 5281: 5280: 5227: 5193: 5188: 5187: 5154: 5153: 5139: 5123: 5089: 5081: 5074: 5070: 5054: 5049: 5048: 5041: 5020: 5009: 5008: 4946: 4935: 4928: 4924: 4914: 4895: 4873: 4872: 4868: 4867: 4804: 4799: 4798: 4775: 4774: 4745: 4712: 4711: 4697: 4681: 4672: 4671: 4655: 4650: 4634: 4628: 4627: 4589: 4585: 4574: 4544: 4540: 4529: 4506: 4505: 4470: 4469: 4438: 4437: 4422: 4391: 4390: 4349: 4345: 4314: 4310: 4306: 4302: 4276: 4275: 4203: 4199: 4176: 4175: 4163: 4153: 4143: 4142: 4132: 4125: 4011: 4010: 3991: 3978: 3937: 3928: 3915: 3906: 3892: 3880: 3855: 3845: 3839: 3826: 3816: 3810: 3796: 3784: 3755: 3736: 3735: 3728: 3697: 3688: 3672: 3663: 3649: 3637: 3612: 3602: 3596: 3583: 3573: 3567: 3553: 3541: 3524: 3505: 3504: 3456: 3440: 3431: 3423: 3411: 3376: 3367: 3352: 3338: 3326: 3313: 3312: 3308: 3304: 3300: 3293: 3287: 3283: 3277: 3270: 3264: 3260: 3254: 3250: 3243: 3242:or transmitted 3239: 3232: 3228: 3221: 3211: 3204: 3176: 3172: 3161: 3157: 3150: 3149: 3148:is in units of 3142: 3127: 3092: 3088: 3077: 3073: 3055: 3044: 3034: 3033: 3017: 3016: 3005: 2988: 2987: 2972: 2964: 2950: 2949: 2926: 2913: 2906: 2900: 2899: 2880: 2879: 2863: 2844: 2834: 2812: 2809: 2808: 2789: 2773: 2763: 2741: 2734: 2713: 2712: 2708: 2701: 2695: 2669: 2667: 2659: 2652: 2637: 2630: 2605: 2604: 2588: 2575: 2559: 2552: 2541: 2534: 2524: 2511: 2498: 2485: 2479: 2478: 2467: 2457: 2444: 2431: 2418: 2411: 2405: 2404: 2372: 2359: 2337: 2324: 2311: 2298: 2276: 2266: 2256: 2255: 2251: 2214: 2191: 2161: 2135: 2134: 2039: 2029: 2019: 2018: 2011: 1870: 1839: 1829: 1819: 1818: 1806: 1799: 1772: 1759: 1746: 1733: 1711: 1689: 1669: 1668: 1659: 1653: 1649: 1632: 1631: 1612: 1590: 1580: 1561: 1551: 1529: 1526: 1525: 1506: 1484: 1474: 1455: 1445: 1423: 1416: 1395: 1394: 1349: 1348: 1344: 1335: 1329: 1288: 1277: 1256: 1252: 1238: 1237: 1230: 1229: 1222: 1215: 1209: 1200: 1192: 1187:It is called a 1170: 1121: 1120: 1109: 1106:Planck constant 1104:is the reduced 1101: 1029: 1025: 1002: 1001: 989: 979: 969: 968: 957: 943: 926: 892:delta potential 880: 851: 850: 849: 614: 606: 605: 551: 550:Advanced topics 543: 542: 541: 493:Hidden-variable 483:de Broglie–Bohm 462: 460:Interpretations 452: 451: 450: 420: 412: 411: 410: 368: 360: 359: 358: 325: 281:CHSH inequality 270: 262: 261: 260: 189:Complementarity 183: 175: 174: 173: 141: 112: 51: 35: 34: 17: 12: 11: 5: 5709: 5707: 5699: 5698: 5693: 5688: 5683: 5681:Quantum models 5678: 5668: 5667: 5664: 5663: 5649: 5648:External links 5646: 5645: 5644: 5637: 5631: 5616: 5615: 5572: 5568:J. Chem. Phys. 5551: 5533: 5481: 5456: 5454: 5451: 5450: 5449: 5444: 5439: 5434: 5429: 5424: 5419: 5410: 5405: 5400: 5395: 5390: 5385: 5378: 5375: 5351: 5348: 5343: 5339: 5318:function (see 5312:generalization 5293: 5289: 5256: 5253: 5249: 5245: 5240: 5237: 5234: 5230: 5226: 5223: 5220: 5217: 5214: 5211: 5208: 5205: 5200: 5196: 5172: 5167: 5111: 5107: 5101: 5096: 5092: 5088: 5084: 5080: 5077: 5073: 5069: 5066: 5061: 5057: 5027: 5023: 5019: 5016: 4996: 4991: 4987: 4983: 4978: 4973: 4967: 4964: 4961: 4958: 4953: 4949: 4945: 4942: 4938: 4934: 4931: 4927: 4921: 4917: 4913: 4910: 4907: 4902: 4898: 4894: 4891: 4888: 4885: 4880: 4876: 4871: 4864: 4861: 4856: 4853: 4850: 4847: 4844: 4841: 4838: 4833: 4830: 4825: 4822: 4819: 4816: 4811: 4807: 4782: 4762: 4757: 4752: 4748: 4742: 4739: 4736: 4727: 4724: 4721: 4716: 4710: 4707: 4704: 4701: 4698: 4694: 4691: 4688: 4684: 4680: 4677: 4674: 4673: 4668: 4665: 4662: 4658: 4654: 4651: 4649: 4646: 4643: 4640: 4639: 4637: 4615: 4609: 4603: 4600: 4595: 4592: 4588: 4584: 4581: 4577: 4573: 4570: 4564: 4558: 4555: 4550: 4547: 4543: 4539: 4536: 4532: 4528: 4525: 4522: 4519: 4516: 4513: 4489: 4486: 4483: 4480: 4477: 4457: 4454: 4451: 4448: 4445: 4410: 4407: 4404: 4401: 4398: 4378: 4374: 4369: 4363: 4360: 4355: 4352: 4348: 4344: 4341: 4338: 4334: 4328: 4325: 4320: 4317: 4313: 4309: 4305: 4301: 4298: 4295: 4292: 4289: 4286: 4283: 4263: 4260: 4257: 4254: 4251: 4248: 4245: 4242: 4239: 4236: 4233: 4230: 4227: 4224: 4221: 4218: 4210: 4206: 4202: 4197: 4194: 4191: 4188: 4183: 4179: 4169: 4166: 4160: 4156: 4150: 4124: 4121: 4072: 4069: 4066: 4063: 4060: 4057: 4054: 4051: 4048: 4045: 4042: 4039: 4036: 4033: 4030: 4027: 4024: 4021: 4018: 3989:effective mass 3977: 3974: 3962: 3949: 3944: 3940: 3936: 3922: 3918: 3914: 3903: 3900: 3888: 3877: 3862: 3858: 3852: 3848: 3833: 3829: 3823: 3819: 3807: 3804: 3792: 3781: 3778: 3775: 3772: 3769: 3764: 3759: 3754: 3750: 3746: 3743: 3704: 3700: 3696: 3684: 3679: 3675: 3671: 3660: 3657: 3645: 3634: 3619: 3615: 3609: 3605: 3590: 3586: 3580: 3576: 3564: 3561: 3549: 3538: 3533: 3528: 3523: 3519: 3515: 3512: 3486: 3478: 3475: 3467: 3464: 3452: 3447: 3443: 3439: 3419: 3408: 3405: 3401: 3388: 3383: 3379: 3375: 3363: 3360: 3349: 3346: 3334: 3323: 3320: 3291: 3281: 3276:(reflection), 3268: 3258: 3248: 3237: 3226: 3183: 3179: 3175: 3168: 3164: 3160: 3133:Transmission ( 3126: 3119: 3107: 3099: 3095: 3091: 3084: 3080: 3076: 3070: 3067: 3061: 3058: 3051: 3047: 3041: 3037: 3030: 3027: 3024: 2991: 2986: 2979: 2975: 2970: 2967: 2961: 2958: 2955: 2952: 2951: 2948: 2943: 2938: 2929: 2925: 2916: 2912: 2911: 2909: 2883: 2878: 2875: 2872: 2867: if  2864: 2862: 2857: 2854: 2851: 2847: 2837: 2833: 2830: 2827: 2824: 2815: 2811: 2810: 2807: 2804: 2801: 2798: 2793: if  2790: 2788: 2783: 2780: 2776: 2766: 2762: 2759: 2756: 2753: 2744: 2740: 2739: 2737: 2732: 2729: 2726: 2723: 2720: 2706: 2699: 2629: 2622: 2608: 2603: 2600: 2595: 2591: 2587: 2582: 2578: 2574: 2566: 2562: 2558: 2555: 2550: 2547: 2544: 2538: 2535: 2531: 2527: 2523: 2518: 2514: 2510: 2505: 2501: 2497: 2492: 2488: 2484: 2481: 2480: 2477: 2474: 2471: 2468: 2464: 2460: 2456: 2451: 2447: 2443: 2438: 2434: 2430: 2425: 2421: 2417: 2416: 2414: 2390: 2387: 2384: 2379: 2375: 2371: 2366: 2362: 2358: 2355: 2352: 2349: 2344: 2340: 2336: 2331: 2327: 2323: 2318: 2314: 2310: 2305: 2301: 2297: 2294: 2291: 2288: 2282: 2279: 2273: 2269: 2263: 2239: 2236: 2233: 2230: 2227: 2224: 2220: 2217: 2213: 2210: 2207: 2204: 2201: 2197: 2194: 2190: 2187: 2184: 2181: 2177: 2174: 2171: 2167: 2164: 2158: 2155: 2150: 2147: 2143: 2122: 2119: 2116: 2113: 2110: 2107: 2104: 2101: 2098: 2095: 2092: 2088: 2084: 2080: 2076: 2073: 2070: 2067: 2063: 2059: 2055: 2051: 2045: 2042: 2036: 2032: 2026: 1997: 1994: 1991: 1987: 1984: 1981: 1978: 1973: 1970: 1965: 1962: 1958: 1954: 1951: 1948: 1945: 1941: 1938: 1935: 1932: 1929: 1926: 1923: 1920: 1915: 1912: 1907: 1904: 1900: 1896: 1893: 1890: 1886: 1883: 1880: 1876: 1873: 1867: 1864: 1859: 1856: 1852: 1845: 1842: 1836: 1832: 1826: 1784: 1779: 1775: 1771: 1766: 1762: 1758: 1753: 1749: 1745: 1740: 1736: 1732: 1729: 1726: 1723: 1718: 1714: 1710: 1707: 1704: 1701: 1696: 1692: 1688: 1685: 1682: 1679: 1676: 1635: 1630: 1627: 1624: 1621: 1616: if  1613: 1611: 1606: 1603: 1600: 1597: 1593: 1583: 1579: 1574: 1571: 1568: 1564: 1554: 1550: 1547: 1544: 1541: 1532: 1528: 1527: 1524: 1521: 1518: 1515: 1510: if  1507: 1505: 1500: 1497: 1494: 1491: 1487: 1477: 1473: 1468: 1465: 1462: 1458: 1448: 1444: 1441: 1438: 1435: 1426: 1422: 1421: 1419: 1414: 1411: 1408: 1405: 1402: 1380: 1375: 1371: 1368: 1365: 1359: 1356: 1305: 1302: 1295: 1291: 1286: 1283: 1280: 1274: 1271: 1263: 1259: 1255: 1250: 1245: 1241: 1208: 1205: 1158: 1155: 1152: 1149: 1146: 1143: 1140: 1137: 1134: 1131: 1128: 1089: 1086: 1083: 1080: 1077: 1074: 1071: 1068: 1065: 1062: 1059: 1056: 1053: 1050: 1047: 1044: 1036: 1032: 1028: 1023: 1020: 1017: 1014: 1009: 1005: 995: 992: 986: 982: 976: 925: 922: 896:potential well 882: 881: 879: 878: 871: 864: 856: 853: 852: 848: 847: 842: 837: 832: 827: 822: 817: 812: 807: 802: 797: 792: 787: 782: 777: 772: 767: 762: 757: 752: 747: 742: 737: 732: 727: 722: 717: 712: 707: 702: 697: 692: 687: 682: 677: 672: 667: 662: 657: 652: 647: 642: 637: 632: 627: 622: 616: 615: 612: 611: 608: 607: 604: 603: 598: 593: 588: 586:Density matrix 583: 578: 573: 568: 563: 558: 552: 549: 548: 545: 544: 540: 539: 534: 529: 524: 519: 514: 509: 508: 507: 506: 505: 490: 485: 480: 475: 470: 464: 463: 458: 457: 454: 453: 449: 448: 443: 438: 433: 428: 422: 421: 418: 417: 414: 413: 409: 408: 403: 398: 393: 388: 383: 377: 376: 375: 369: 366: 365: 362: 361: 357: 356: 351: 346: 340: 339: 338: 337: 336: 334:Delayed-choice 329:Quantum eraser 324: 323: 318: 313: 308: 303: 298: 293: 288: 283: 278: 272: 271: 268: 267: 264: 263: 259: 258: 257: 256: 246: 241: 236: 231: 226: 221: 219:Quantum number 216: 211: 206: 201: 196: 191: 185: 184: 181: 180: 177: 176: 172: 171: 166: 160: 159: 158: 153: 148: 142: 139: 138: 135: 134: 133: 132: 127: 122: 114: 113: 108: 97: 94: 90: 83: 80: 74: 71: 68: 64: 57: 54: 50: 45: 42: 31: 30: 24: 23: 15: 13: 10: 9: 6: 4: 3: 2: 5708: 5697: 5694: 5692: 5689: 5687: 5684: 5682: 5679: 5677: 5674: 5673: 5671: 5661: 5656: 5652: 5651: 5647: 5642: 5638: 5634: 5628: 5624: 5619: 5618: 5611: 5607: 5603: 5599: 5595: 5591: 5587: 5583: 5576: 5573: 5569: 5565: 5561: 5555: 5552: 5549: 5546: 5542: 5537: 5534: 5530: 5526: 5522: 5518: 5514: 5510: 5505: 5500: 5496: 5492: 5485: 5482: 5471: 5467: 5461: 5458: 5452: 5448: 5445: 5443: 5440: 5438: 5435: 5433: 5430: 5428: 5425: 5423: 5420: 5418: 5414: 5413:Hydrogen atom 5411: 5409: 5406: 5404: 5401: 5399: 5396: 5394: 5391: 5389: 5386: 5384: 5383:Free particle 5381: 5380: 5376: 5374: 5372: 5366: 5349: 5346: 5341: 5337: 5328: 5323: 5321: 5317: 5313: 5309: 5291: 5287: 5278: 5276: 5270: 5254: 5251: 5247: 5238: 5235: 5232: 5228: 5224: 5221: 5218: 5212: 5209: 5206: 5203: 5198: 5194: 5170: 5165: 5151: 5146: 5142: 5137: 5136: 5130: 5126: 5109: 5105: 5099: 5094: 5090: 5086: 5082: 5078: 5075: 5071: 5067: 5064: 5059: 5055: 5044: 5025: 5021: 5017: 5014: 4994: 4989: 4985: 4981: 4976: 4971: 4965: 4959: 4951: 4947: 4943: 4940: 4936: 4932: 4929: 4925: 4919: 4915: 4911: 4908: 4905: 4900: 4892: 4889: 4886: 4878: 4874: 4869: 4862: 4859: 4854: 4848: 4845: 4842: 4836: 4831: 4828: 4823: 4817: 4809: 4805: 4796: 4780: 4760: 4755: 4750: 4746: 4740: 4737: 4734: 4725: 4722: 4719: 4714: 4708: 4705: 4702: 4699: 4692: 4689: 4686: 4682: 4678: 4675: 4666: 4663: 4660: 4656: 4652: 4647: 4644: 4641: 4635: 4613: 4607: 4601: 4598: 4593: 4590: 4586: 4582: 4579: 4575: 4571: 4568: 4562: 4556: 4553: 4548: 4545: 4541: 4537: 4534: 4530: 4526: 4523: 4517: 4511: 4503: 4487: 4484: 4481: 4478: 4475: 4455: 4452: 4449: 4446: 4435: 4429: 4425: 4405: 4402: 4399: 4396: 4376: 4372: 4367: 4361: 4358: 4353: 4350: 4346: 4342: 4339: 4336: 4332: 4326: 4323: 4318: 4315: 4311: 4307: 4303: 4299: 4296: 4293: 4287: 4281: 4261: 4255: 4249: 4246: 4243: 4237: 4231: 4225: 4219: 4216: 4208: 4204: 4200: 4192: 4186: 4181: 4177: 4167: 4164: 4158: 4148: 4135: 4129: 4122: 4120: 4118: 4114: 4110: 4106: 4102: 4101:Hydrogen atom 4097: 4095: 4091: 4086: 4067: 4064: 4061: 4055: 4049: 4043: 4040: 4034: 4031: 4028: 4025: 4022: 4006: 4004: 4000: 3995: 3990: 3986: 3981: 3975: 3973: 3960: 3947: 3942: 3934: 3920: 3916: 3912: 3901: 3898: 3886: 3875: 3860: 3856: 3850: 3831: 3827: 3821: 3817: 3805: 3802: 3790: 3779: 3776: 3773: 3770: 3767: 3762: 3752: 3744: 3741: 3732: 3702: 3698: 3694: 3682: 3677: 3669: 3658: 3655: 3643: 3632: 3617: 3613: 3607: 3603: 3588: 3584: 3578: 3562: 3559: 3547: 3536: 3531: 3521: 3513: 3510: 3502: 3497: 3484: 3476: 3473: 3465: 3462: 3450: 3445: 3437: 3417: 3406: 3403: 3399: 3386: 3381: 3373: 3361: 3358: 3347: 3344: 3332: 3321: 3318: 3297: 3290: 3280: 3274: 3267: 3257: 3247: 3236: 3225: 3218: 3214: 3207: 3181: 3173: 3166: 3162: 3158: 3145: 3140: 3136: 3131: 3124: 3120: 3118: 3105: 3097: 3089: 3082: 3078: 3074: 3068: 3065: 3059: 3056: 3049: 3045: 3039: 3028: 3025: 3022: 3013: 3011: 2984: 2977: 2968: 2965: 2959: 2956: 2953: 2946: 2941: 2936: 2927: 2923: 2914: 2907: 2896: 2876: 2873: 2870: 2860: 2855: 2852: 2849: 2845: 2835: 2831: 2825: 2813: 2805: 2802: 2799: 2796: 2786: 2781: 2778: 2774: 2764: 2760: 2754: 2742: 2735: 2730: 2724: 2718: 2705: 2698: 2693: 2688: 2684: 2677: 2673: 2666: 2662: 2655: 2650: 2640: 2634: 2627: 2624:Bound state ( 2623: 2621: 2601: 2593: 2589: 2585: 2580: 2576: 2564: 2556: 2553: 2548: 2545: 2542: 2536: 2529: 2525: 2521: 2516: 2512: 2508: 2503: 2499: 2495: 2490: 2486: 2482: 2475: 2472: 2469: 2462: 2458: 2454: 2449: 2445: 2441: 2436: 2432: 2428: 2423: 2419: 2412: 2401: 2388: 2385: 2377: 2373: 2369: 2364: 2360: 2353: 2350: 2342: 2338: 2334: 2329: 2325: 2321: 2316: 2312: 2308: 2303: 2299: 2295: 2289: 2286: 2280: 2277: 2271: 2261: 2237: 2228: 2225: 2218: 2215: 2211: 2205: 2202: 2195: 2192: 2185: 2182: 2179: 2172: 2165: 2162: 2156: 2153: 2148: 2145: 2141: 2120: 2114: 2108: 2105: 2102: 2093: 2086: 2082: 2078: 2074: 2068: 2061: 2057: 2053: 2043: 2040: 2034: 2024: 2014: 2008: 1995: 1992: 1989: 1982: 1976: 1971: 1968: 1963: 1960: 1956: 1952: 1949: 1946: 1943: 1936: 1930: 1924: 1918: 1913: 1910: 1905: 1902: 1898: 1894: 1891: 1888: 1881: 1874: 1871: 1865: 1862: 1857: 1854: 1850: 1843: 1840: 1834: 1824: 1814: 1810: 1802: 1795: 1782: 1777: 1773: 1769: 1764: 1760: 1756: 1751: 1747: 1743: 1738: 1734: 1730: 1724: 1716: 1712: 1708: 1702: 1694: 1690: 1686: 1680: 1674: 1665: 1662: 1656: 1628: 1625: 1622: 1619: 1609: 1604: 1601: 1598: 1595: 1591: 1581: 1577: 1572: 1569: 1566: 1562: 1552: 1548: 1542: 1530: 1522: 1519: 1516: 1513: 1503: 1498: 1495: 1492: 1489: 1485: 1475: 1471: 1466: 1463: 1460: 1456: 1446: 1442: 1436: 1424: 1417: 1412: 1406: 1400: 1391: 1378: 1369: 1366: 1363: 1357: 1354: 1343: 1338: 1332: 1327: 1323: 1319: 1303: 1300: 1293: 1284: 1281: 1278: 1272: 1269: 1261: 1257: 1253: 1248: 1243: 1239: 1225: 1218: 1212: 1206: 1204: 1198: 1190: 1185: 1183: 1177: 1173: 1156: 1150: 1144: 1141: 1138: 1132: 1126: 1117: 1115: 1107: 1087: 1081: 1075: 1072: 1069: 1063: 1057: 1051: 1045: 1042: 1034: 1030: 1026: 1018: 1012: 1007: 1003: 993: 990: 984: 974: 964: 960: 956: 950: 946: 942: 941:wave function 938: 930: 923: 921: 918: 916: 912: 911:limiting case 907: 905: 901: 897: 893: 889: 877: 872: 870: 865: 863: 858: 857: 855: 854: 846: 843: 841: 838: 836: 833: 831: 828: 826: 823: 821: 818: 816: 813: 811: 808: 806: 803: 801: 798: 796: 793: 791: 788: 786: 783: 781: 778: 776: 773: 771: 768: 766: 763: 761: 758: 756: 753: 751: 748: 746: 743: 741: 738: 736: 733: 731: 728: 726: 723: 721: 718: 716: 713: 711: 708: 706: 703: 701: 698: 696: 693: 691: 688: 686: 683: 681: 678: 676: 673: 671: 668: 666: 663: 661: 658: 656: 653: 651: 648: 646: 643: 641: 638: 636: 633: 631: 628: 626: 623: 621: 618: 617: 610: 609: 602: 599: 597: 594: 592: 589: 587: 584: 582: 579: 577: 576:Quantum chaos 574: 572: 569: 567: 564: 562: 559: 557: 554: 553: 547: 546: 538: 535: 533: 532:Transactional 530: 528: 525: 523: 522:Quantum logic 520: 518: 515: 513: 510: 504: 501: 500: 499: 496: 495: 494: 491: 489: 486: 484: 481: 479: 476: 474: 471: 469: 466: 465: 461: 456: 455: 447: 444: 442: 439: 437: 434: 432: 429: 427: 424: 423: 416: 415: 407: 404: 402: 399: 397: 394: 392: 389: 387: 384: 382: 379: 378: 374: 371: 370: 364: 363: 355: 352: 350: 347: 345: 342: 341: 335: 332: 331: 330: 327: 326: 322: 319: 317: 314: 312: 309: 307: 304: 302: 299: 297: 294: 292: 289: 287: 284: 282: 279: 277: 274: 273: 266: 265: 255: 252: 251: 250: 249:Wave function 247: 245: 242: 240: 237: 235: 232: 230: 229:Superposition 227: 225: 222: 220: 217: 215: 212: 210: 207: 205: 202: 200: 197: 195: 192: 190: 187: 186: 179: 178: 170: 167: 165: 162: 161: 157: 154: 152: 149: 147: 144: 143: 137: 136: 131: 128: 126: 123: 121: 118: 117: 116: 115: 111: 78: 72: 55: 52: 48: 40: 33: 32: 29: 25: 21: 20: 5640: 5622: 5585: 5581: 5575: 5554: 5544: 5536: 5497:(11): 1–49, 5494: 5490: 5484: 5473:. Retrieved 5469: 5460: 5364: 5326: 5324: 5315: 5311: 5307: 5274: 5268: 5149: 5144: 5140: 5133: 5128: 5124: 5042: 4794: 4434:atomic units 4427: 4423: 4140: 4133: 4112: 4104: 4098: 4089: 4087: 4007: 3996: 3982: 3979: 3733: 3498: 3295: 3288: 3278: 3272: 3265: 3255: 3245: 3234: 3223: 3219: 3212: 3205: 3202: 3143: 3138: 3134: 3122: 3121:Scattering ( 3014: 2897: 2703: 2696: 2691: 2686: 2682: 2675: 2671: 2664: 2660: 2653: 2646: 2638: 2625: 2402: 2012: 2009: 1812: 1808: 1800: 1796: 1666: 1660: 1654: 1392: 1340:, where the 1336: 1330: 1223: 1216: 1213: 1210: 1196: 1188: 1186: 1175: 1171: 1118: 962: 958: 948: 944: 934: 919: 908: 891: 885: 431:Klein–Gordon 367:Formulations 204:Energy level 199:Entanglement 182:Fundamentals 169:Interference 120:Introduction 5560:A. Dalgarno 4731:where  4113:double-well 2649:bound state 1342:wave number 820:von Neumann 805:Schrödinger 581:EPR paradox 512:Many-worlds 446:Schrödinger 401:Schrödinger 396:Phase-space 386:Interaction 291:Double-slit 269:Experiments 244:Uncertainty 214:Nonlocality 209:Measurement 194:Decoherence 164:Hamiltonian 5670:Categories 5475:2021-03-29 5453:References 3985:conducting 2133:because 1316:this is a 815:Sommerfeld 730:Heisenberg 725:Gutzwiller 665:de Broglie 613:Scientists 527:Relational 478:Copenhagen 381:Heisenberg 239:Tunnelling 140:Background 5610:0002-9505 5504:1302.0864 5342:− 5233:− 5219:± 5199:± 5095:± 5087:− 5079:± 5060:± 5026:± 4960:λ 4952:± 4941:− 4933:− 4912:λ 4906:− 4893:λ 4855:± 4843:λ 4818:λ 4810:± 4797:equation 4741:− 4706:− 4703:λ 4687:− 4679:λ 4661:− 4645:− 4594:− 4580:− 4535:− 4512:ψ 4482:λ 4444:ℏ 4409:∞ 4354:− 4343:δ 4340:λ 4308:δ 4297:− 4250:ψ 4232:ψ 4187:ψ 4155:ℏ 4149:− 4056:ϕ 4044:ψ 4017:Ψ 3939:ℏ 3917:λ 3847:ℏ 3828:λ 3774:− 3699:λ 3674:ℏ 3614:λ 3575:ℏ 3474:− 3466:λ 3442:ℏ 3378:ℏ 3362:λ 3348:− 3178:ℏ 3163:λ 3094:ℏ 3079:λ 3069:− 3046:κ 3036:ℏ 3029:− 2974:ℏ 2969:λ 2960:− 2954:κ 2942:κ 2874:≥ 2853:κ 2850:− 2814:ψ 2800:≤ 2779:κ 2743:ψ 2719:ψ 2561:ℏ 2549:λ 2522:− 2483:− 2455:− 2442:− 2354:λ 2335:− 2296:− 2268:ℏ 2262:− 2229:ε 2226:− 2216:ψ 2212:− 2206:ε 2193:ψ 2163:ψ 2157:ε 2149:ε 2146:− 2142:∫ 2109:ψ 2106:λ 2079:ψ 2075:− 2054:ψ 2031:ℏ 2025:− 1977:ψ 1972:ε 1964:ε 1961:− 1957:∫ 1931:ψ 1914:ε 1906:ε 1903:− 1899:∫ 1872:ψ 1866:ε 1858:ε 1855:− 1851:∫ 1831:ℏ 1825:− 1713:ψ 1691:ψ 1675:ψ 1596:− 1531:ψ 1490:− 1425:ψ 1401:ψ 1374:ℏ 1301:ψ 1290:ℏ 1273:− 1249:ψ 1145:δ 1142:λ 1076:ψ 1058:ψ 1013:ψ 981:ℏ 975:− 955:potential 845:Zeilinger 690:Ehrenfest 419:Equations 96:⟩ 93:Ψ 82:^ 70:⟩ 67:Ψ 44:ℏ 5529:56188533 5377:See also 5277:function 5273:Lambert 5150:ungerade 4436:and set 3501:symmetry 2219:′ 2196:′ 2166:″ 2087:′ 2062:′ 1875:″ 1211:Source: 939:for the 770:Millikan 695:Einstein 680:Davisson 635:Blackett 620:Aharonov 488:Ensemble 468:Bayesian 373:Overview 254:Collapse 234:Symmetry 125:Glossary 5590:Bibcode 5509:Bibcode 5308:unequal 4468:. Here 3125:> 0) 2668:√ 2628:< 0) 1180:is the 1112:is the 913:of the 810:Simmons 800:Rydberg 765:Moseley 745:Kramers 735:Hilbert 720:Glauber 715:Feynman 700:Everett 670:Compton 441:Rydberg 130:History 5629:  5608:  5527:  5267:where 5135:gerade 4773:Thus, 4502:ansatz 4389:where 3215:> 0 3208:< 0 3146:> 0 2656:< 0 1807:[− 1226:> 0 1219:< 0 1169:where 1114:energy 1108:, and 1100:where 840:Zeeman 835:Wigner 785:Planck 755:Landau 740:Jordan 391:Matrix 321:Popper 5525:S2CID 5499:arXiv 4092:(see 1815:] 1320:with 894:is a 795:Raman 780:Pauli 775:Onnes 710:Fermi 685:Debye 675:Dirac 640:Bloch 630:Bethe 498:Local 436:Pauli 426:Dirac 224:State 5627:ISBN 5606:ISSN 5495:2012 4485:< 4479:< 4406:< 4400:< 3303:and 1623:> 1517:< 1334:and 1221:and 1184:. 902:- a 890:the 830:Wien 825:Weyl 790:Rabi 760:Laue 750:Lamb 705:Fock 660:Bose 655:Born 650:Bohr 645:Bohm 625:Bell 5598:doi 5517:doi 5415:or 5367:= 0 5322:). 5143:= − 5045:= 1 4426:= ± 4136:= 2 4096:). 4085:. 3284:= 0 3261:= 1 3210:or 2709:= 0 2641:= 0 2015:→ 0 1811:, + 1803:= 0 1652:), 1328:of 1199:if 1191:if 967:is 886:In 5672:: 5604:. 5596:. 5586:60 5584:. 5566:, 5523:, 5515:, 5507:, 5493:, 5468:. 5327:qR 5127:= 4430:/2 3294:= 3271:= 3012:. 2877:0. 2702:= 2687:iÎș 2685:= 2663:= 2658:, 2389:0. 1817:: 5635:. 5612:. 5600:: 5592:: 5519:: 5511:: 5501:: 5478:. 5365:E 5350:0 5347:= 5338:d 5316:W 5292:+ 5288:d 5275:W 5269:W 5255:, 5252:R 5248:/ 5244:) 5239:R 5236:q 5229:e 5225:R 5222:q 5216:( 5213:W 5210:+ 5207:q 5204:= 5195:d 5171:+ 5166:2 5162:H 5145:B 5141:A 5129:B 5125:A 5110:. 5106:] 5100:R 5091:d 5083:e 5076:1 5072:[ 5068:q 5065:= 5056:d 5043:λ 5022:d 5018:= 5015:d 4995:, 4990:2 4986:/ 4982:1 4977:} 4972:] 4966:R 4963:) 4957:( 4948:d 4944:2 4937:e 4930:1 4926:[ 4920:2 4916:q 4909:4 4901:2 4897:) 4890:+ 4887:1 4884:( 4879:2 4875:q 4870:{ 4863:2 4860:1 4852:) 4849:1 4846:+ 4840:( 4837:q 4832:2 4829:1 4824:= 4821:) 4815:( 4806:d 4781:d 4761:. 4756:2 4751:2 4747:d 4738:= 4735:E 4726:, 4723:0 4720:= 4715:| 4709:d 4700:q 4693:R 4690:d 4683:e 4676:q 4667:R 4664:d 4657:e 4653:q 4648:d 4642:q 4636:| 4614:. 4608:| 4602:2 4599:R 4591:x 4587:| 4583:d 4576:e 4572:B 4569:+ 4563:| 4557:2 4554:R 4549:+ 4546:x 4542:| 4538:d 4531:e 4527:A 4524:= 4521:) 4518:x 4515:( 4488:1 4476:0 4456:1 4453:= 4450:m 4447:= 4428:R 4424:x 4403:R 4397:0 4377:, 4373:] 4368:) 4362:2 4359:R 4351:x 4347:( 4337:+ 4333:) 4327:2 4324:R 4319:+ 4316:x 4312:( 4304:[ 4300:q 4294:= 4291:) 4288:x 4285:( 4282:V 4262:, 4259:) 4256:x 4253:( 4247:E 4244:= 4241:) 4238:x 4235:( 4229:) 4226:x 4223:( 4220:V 4217:+ 4209:2 4205:x 4201:d 4196:) 4193:x 4190:( 4182:2 4178:d 4168:m 4165:2 4159:2 4134:R 4090:D 4071:) 4068:z 4065:, 4062:y 4059:( 4053:) 4050:x 4047:( 4041:= 4038:) 4035:z 4032:, 4029:y 4026:, 4023:x 4020:( 3992:m 3961:. 3948:E 3943:2 3935:2 3921:2 3913:m 3902:+ 3899:1 3887:1 3876:= 3861:2 3857:k 3851:4 3832:2 3822:2 3818:m 3806:+ 3803:1 3791:1 3780:= 3777:R 3771:1 3768:= 3763:2 3758:| 3753:t 3749:| 3745:= 3742:T 3729:λ 3703:2 3695:m 3683:E 3678:2 3670:2 3659:+ 3656:1 3644:1 3633:= 3618:2 3608:2 3604:m 3589:2 3585:k 3579:4 3563:+ 3560:1 3548:1 3537:= 3532:2 3527:| 3522:r 3518:| 3514:= 3511:R 3485:. 3477:1 3463:m 3451:k 3446:2 3438:i 3418:1 3407:= 3404:r 3400:, 3387:k 3382:2 3374:i 3359:m 3345:1 3333:1 3322:= 3319:t 3309:t 3305:t 3301:r 3296:t 3292:r 3289:B 3282:l 3279:B 3273:r 3269:l 3266:A 3259:r 3256:A 3251:) 3249:r 3246:B 3244:( 3240:) 3238:l 3235:A 3233:( 3229:) 3227:r 3224:A 3222:( 3213:x 3206:x 3182:2 3174:2 3167:2 3159:m 3144:E 3139:R 3135:T 3123:E 3106:. 3098:2 3090:2 3083:2 3075:m 3066:= 3060:m 3057:2 3050:2 3040:2 3026:= 3023:E 3006:λ 2985:, 2978:2 2966:m 2957:= 2947:, 2937:= 2932:r 2928:B 2924:= 2919:l 2915:A 2908:{ 2871:x 2861:, 2856:x 2846:e 2840:r 2836:B 2832:= 2829:) 2826:x 2823:( 2818:R 2806:, 2803:0 2797:x 2787:, 2782:x 2775:e 2769:l 2765:A 2761:= 2758:) 2755:x 2752:( 2747:L 2736:{ 2731:= 2728:) 2725:x 2722:( 2707:l 2704:B 2700:r 2697:A 2692:x 2683:ħ 2681:/ 2678:| 2676:E 2674:| 2672:m 2670:2 2665:i 2661:k 2654:E 2643:. 2639:x 2626:E 2602:. 2599:) 2594:l 2590:A 2586:+ 2581:r 2577:A 2573:( 2565:2 2557:k 2554:i 2546:m 2543:2 2537:= 2530:l 2526:B 2517:r 2513:B 2509:+ 2504:l 2500:A 2496:+ 2491:r 2487:A 2476:, 2473:0 2470:= 2463:l 2459:B 2450:r 2446:B 2437:l 2433:A 2429:+ 2424:r 2420:A 2413:{ 2386:= 2383:) 2378:l 2374:A 2370:+ 2365:r 2361:A 2357:( 2351:+ 2348:) 2343:l 2339:B 2330:r 2326:B 2322:+ 2317:l 2313:A 2309:+ 2304:r 2300:A 2293:( 2290:k 2287:i 2281:m 2278:2 2272:2 2252:ψ 2238:. 2235:] 2232:) 2223:( 2209:) 2203:+ 2200:( 2189:[ 2186:= 2183:x 2180:d 2176:) 2173:x 2170:( 2154:+ 2121:, 2118:) 2115:0 2112:( 2103:+ 2100:] 2097:) 2094:0 2091:( 2083:L 2072:) 2069:0 2066:( 2058:R 2050:[ 2044:m 2041:2 2035:2 2013:Δ 1996:. 1993:x 1990:d 1986:) 1983:x 1980:( 1969:+ 1953:E 1950:= 1947:x 1944:d 1940:) 1937:x 1934:( 1928:) 1925:x 1922:( 1919:V 1911:+ 1895:+ 1892:x 1889:d 1885:) 1882:x 1879:( 1863:+ 1844:m 1841:2 1835:2 1813:Δ 1809:Δ 1801:x 1783:, 1778:l 1774:B 1770:+ 1765:r 1761:B 1757:= 1752:l 1748:A 1744:+ 1739:r 1735:A 1731:= 1728:) 1725:0 1722:( 1717:R 1709:= 1706:) 1703:0 1700:( 1695:L 1687:= 1684:) 1681:0 1678:( 1661:e 1655:e 1650:k 1629:, 1626:0 1620:x 1610:, 1605:x 1602:k 1599:i 1592:e 1586:l 1582:B 1578:+ 1573:x 1570:k 1567:i 1563:e 1557:r 1553:B 1549:= 1546:) 1543:x 1540:( 1535:R 1523:, 1520:0 1514:x 1504:, 1499:x 1496:k 1493:i 1486:e 1480:l 1476:A 1472:+ 1467:x 1464:k 1461:i 1457:e 1451:r 1447:A 1443:= 1440:) 1437:x 1434:( 1429:L 1418:{ 1413:= 1410:) 1407:x 1404:( 1379:. 1370:E 1367:m 1364:2 1358:= 1355:k 1345:k 1337:e 1331:e 1304:; 1294:2 1285:E 1282:m 1279:2 1270:= 1262:2 1258:x 1254:d 1244:2 1240:d 1224:x 1217:x 1201:λ 1193:λ 1178:) 1176:x 1174:( 1172:ÎŽ 1157:, 1154:) 1151:x 1148:( 1139:= 1136:) 1133:x 1130:( 1127:V 1110:E 1102:ħ 1088:, 1085:) 1082:x 1079:( 1073:E 1070:= 1067:) 1064:x 1061:( 1055:) 1052:x 1049:( 1046:V 1043:+ 1035:2 1031:x 1027:d 1022:) 1019:x 1016:( 1008:2 1004:d 994:m 991:2 985:2 965:) 963:x 961:( 959:V 951:) 949:x 947:( 945:ψ 875:e 868:t 861:v 89:| 79:H 73:= 63:| 56:t 53:d 49:d 41:i

Index

Quantum mechanics
Schrödinger equation
Introduction
Glossary
History
Classical mechanics
Old quantum theory
Bra–ket notation
Hamiltonian
Interference
Complementarity
Decoherence
Entanglement
Energy level
Measurement
Nonlocality
Quantum number
State
Superposition
Symmetry
Tunnelling
Uncertainty
Wave function
Collapse
Bell's inequality
CHSH inequality
Davisson–Germer
Double-slit
Elitzur–Vaidman
Franck–Hertz

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