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Position and momentum spaces

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momentum, whose possible values are taken from a locally compact Abelian group and its dual. A quantum mechanical state can be fully represented in terms of either variables, and the transformation used to go between position and momentum spaces is, in each of the three cases, a variant of the Fourier transform. The table uses bra-ket notation as well as mathematical terminology describing Canonical commutation relations (CCR).
1003: 2412:. Since a quantum mechanical particle has a frequency proportional to the momentum (de Broglie's equation given above), describing the particle as a sum of its momentum components is equivalent to describing it as a sum of frequency components (i.e. a Fourier transform). This becomes clear when we ask ourselves how we can transform from one representation to another. 691: 2391: 1988: 1730: 3685: 3056: 474: 148:
These quantities and ideas transcend all of classical and quantum physics, and a physical system can be described using either the positions of the constituent particles, or their momenta, both formulations equivalently provide the same information about the system in consideration. Another quantity
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The advantage of the Legendre transformation is that the relation between the new and old functions and their variables are obtained in the process. Both the coordinate and momentum forms of the equation are equivalent and contain the same information about the dynamics of the system. This form may
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Comparison and summary of relations between conjugate variables in discrete-variable (DV), rotor (ROT), and continuous-variable (CV) phase spaces (taken from arXiv:1709.04460). Most physically relevant phase spaces consist of combinations of these three. Each phase space consists of position and
3319: 2632: 1743: 998:{\displaystyle dL=\sum _{i=1}^{n}\left({\frac {\partial L}{\partial q_{i}}}dq_{i}+{\frac {\partial L}{\partial {\dot {q}}_{i}}}d{\dot {q}}_{i}\right)+{\frac {\partial L}{\partial t}}dt=\sum _{i=1}^{n}({\dot {p}}_{i}dq_{i}+p_{i}d{\dot {q}}_{i})+{\frac {\partial L}{\partial t}}dt\,,} 3547: 3504: 1528: 2264: 2924: 3403: 2102: 2909: 1517: 323: 3216: 2532: 2799: 1260: 1136: 3211: 2524: 2386:
A feature of quantum mechanics is that phase spaces can come in different types: discrete-variable, rotor, and continuous-variable. The table below summarizes some relations involved in the three types of phase spaces.
3408: 2142: 3330: 620: 550: 2816: 1265: 1995: 1983:{\displaystyle L'=L-\sum _{i=1}^{n}(q_{i}{\dot {p}}_{i}+{\dot {q}}_{i}p_{i})\,,\quad -{\dot {q}}_{i}={\frac {\partial L'}{\partial p_{i}}}\,,\quad -q_{i}={\frac {\partial L'}{\partial {\dot {p}}_{i}}}\,.} 2348:
By choosing the eigenfunctions of a different operator as a set of basis functions, one can arrive at a number of different representations of the same state. If one picks the eigenfunctions of the
2672: 3680:{\displaystyle \phi (\mathbf {k} )={\frac {1}{({\sqrt {2\pi }})^{3}}}\int _{\mathbf {r} {\text{-space}}}\psi (\mathbf {r} )e^{-i\mathbf {k} \cdot \mathbf {r} }\mathrm {d} ^{3}\mathbf {r} .} 1725:{\displaystyle dL'=\sum _{i=1}^{n}\left({\frac {\partial L'}{\partial p_{i}}}dp_{i}+{\frac {\partial L'}{\partial {\dot {p}}_{i}}}d{\dot {p}}_{i}\right)+{\frac {\partial L'}{\partial t}}dt} 3051:{\displaystyle \psi (\mathbf {r} )={\frac {1}{({\sqrt {2\pi }})^{3}}}\int _{\mathbf {k} {\text{-space}}}\phi (\mathbf {k} )e^{i\mathbf {k} \cdot \mathbf {r} }\mathrm {d} ^{3}\mathbf {k} } 3133: 3542: 3095: 2703: 2381: 1013:
for differentials allows the exchange of differentials in the generalized coordinates and velocities for the differentials in generalized momenta and their time derivatives,
2746: 1140: 1016: 469:{\displaystyle {\frac {d}{dt}}{\frac {\partial L}{\partial {\dot {q}}_{i}}}={\frac {\partial L}{\partial q_{i}}}\,,\quad {\dot {q}}_{i}\equiv {\frac {dq_{i}}{dt}}\,.} 3138: 2734: 3710:
being given explicitly by the Fourier transform, namely a quarter-cycle rotation in phase space, generated by the oscillator Hamiltonian. Thus, they have the same
2454: 555: 485: 3314:{\displaystyle \phi (\mathbf {k} )=\int _{\mathbf {r} {\text{-space}}}\psi (\mathbf {r} )\phi _{\mathbf {r} }(\mathbf {k} )\mathrm {d} ^{3}\mathbf {r} .} 2627:{\displaystyle \psi (\mathbf {r} )=\int _{\mathbf {k} {\text{-space}}}\phi (\mathbf {k} )\psi _{\mathbf {k} }(\mathbf {r} )\mathrm {d} ^{3}\mathbf {k} } 231:
which states the momentum and wavevector of a free particle are proportional to each other. In this context, when it is unambiguous, the terms "
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Albert, Victor V; Pascazio, Saverio; Devoret, Michel H (2017). "General phase spaces: from discrete variables to rotor and continuum limits".
4093: 4063: 3993: 3965: 3938: 3499:{\displaystyle \phi _{\mathbf {r} }(\mathbf {k} )={\frac {1}{\left({\sqrt {2\pi }}\right)^{3}}}e^{-i\mathbf {k} \cdot \mathbf {r} }} 2259:{\displaystyle {\dot {q}}_{i}={\frac {\partial H}{\partial p_{i}}}\,,\quad {\dot {p}}_{i}=-{\frac {\partial H}{\partial q_{i}}}\,.} 3398:{\displaystyle \mathbf {\hat {r}} =i\hbar {\frac {\partial }{\partial \mathbf {p} }}=i{\frac {\partial }{\partial \mathbf {k} }}} 2123:
the momenta, the Hamiltonian equations of motion place coordinates and momenta on equal footing. For a system with Hamiltonian
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so by comparison of differentials of the Lagrangians, the momenta, and their time derivatives, the momentum space Lagrangian
3850: 3765: 276: 3855: 2904:{\displaystyle \psi _{\mathbf {k} }(\mathbf {r} )={\frac {1}{({\sqrt {2\pi }})^{3}}}e^{i\mathbf {k} \cdot \mathbf {r} }} 2637: 1512:{\displaystyle d\left=-\sum _{i=1}^{n}({\dot {q}}_{i}dp_{i}+q_{i}d{\dot {p}}_{i})+{\frac {\partial L}{\partial t}}dt\,.} 317: 2097:{\displaystyle {\frac {d}{dt}}{\frac {\partial L'}{\partial {\dot {p}}_{i}}}={\frac {\partial L'}{\partial p_{i}}}\,.} 4120: 3769: 1005:
where the definition of generalized momentum and Euler–Lagrange equations have replaced the partial derivatives of
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can be made in terms of the eigenfunctions of this operator, which turns out to be the inverse Fourier transform,
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and we see that the momentum representation is related to the position representation by a Fourier transform.
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a physical system can have; the momentum vector of a particle corresponds to its motion, with units of .
2288: 2116: 235:" and "wavevector" are used interchangeably. However, the de Broglie relation is not true in a crystal. 202: 145:). Conversely, the inverse Fourier transform of a momentum space function is a position space function. 3820: 3795:-space is still meaningful and extremely useful, but it differs in several ways from the non-crystal 2806: 249: 217:/2 stating that position and momentum cannot be simultaneously known to arbitrary precision, and the 84: 4084: 3723: 218: 192: 4036: 4018: 3804: 3735: 2292: 685: 117: 4115: 4089: 4059: 3989: 3961: 3934: 3324: 2740: 2405: 2349: 2312: 2280: 2274: 198: 169: 165: 134: 65: 4028: 3845: 3773: 3753: 3707: 2409: 2719: 2802: 479: 105: 80: 72: 625: 92: 31: 2794:{\displaystyle \mathbf {\hat {p}} =-i\hbar {\frac {\partial }{\partial \mathbf {r} }}} 4109: 4040: 3927: 2810: 2421: 2316: 2308: 2284: 2303:
states. In principle one is free to choose the set of basis states, as long as they
482:). Introducing the definition of canonical momentum for each generalized coordinate 201:
provides two fundamental examples of the duality between position and momentum, the
2435:, then we can write this functions as a weighted sum of orthogonal basis functions 2296: 1992:
Combining the last two equations gives the momentum space Euler–Lagrange equations
1010: 48: 3955: 3840: 3507: 2912: 2304: 1255:{\displaystyle p_{i}d{\dot {q}}_{i}=d({\dot {q}}_{i}p_{i})-{\dot {q}}_{i}dp_{i}} 1131:{\displaystyle {\dot {p}}_{i}dq_{i}=d(q_{i}{\dot {p}}_{i})-q_{i}d{\dot {p}}_{i}} 154: 4032: 3206:{\displaystyle \phi (\mathbf {k} )=\sum _{j}\psi _{j}\phi _{j}(\mathbf {k} ),} 2404:
The momentum representation of a wave function is very closely related to the
96: 17: 2519:{\displaystyle \psi (\mathbf {r} )=\sum _{j}\phi _{j}\psi _{j}(\mathbf {r} )} 3777: 115:
Mathematically, the duality between position and momentum is an example of
91:; a position vector defines a point in space. (If the position vector of a 27:
Physical spaces representing position and momentum, Fourier-transform duals
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be more useful when momentum or angular momentum enters the Lagrangian.
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give any information about how the wave varies within each unit cell.
615:{\displaystyle {\dot {p}}_{i}={\frac {\partial L}{\partial q_{i}}}\,.} 545:{\displaystyle p_{i}={\frac {\partial L}{\partial {\dot {q}}_{i}}}\,,} 3791:
relates to crystal momentum instead of true momentum, the concept of
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can be expressed as a weighted sum of orthogonal basis functions
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is an example of quantum mechanics in the position representation.
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Quantum Physics of Atoms, Molecules, Solids, Nuclei, and Particles
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Conversely, a three-dimensional wave function in momentum space
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Now, the total differential of the momentum space Lagrangian
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Unitary equivalence between position and momentum operator
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and is therefore an alternative description for the state
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as a set of basis functions, the resulting wave function
30:"Momentum space" redirects here. For the jazz album, see 2315:
as a set of basis functions, one speaks of a state as a
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acting on momentum space wave functions is the same as
3803:-space, there is an infinite set of points called the 1262:
which after substitution simplifies and rearranges to
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is "equivalent" to exactly one point in this region.
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Peleg, Y.; Pnini, R.; Zaarur, E.; Hecht, E. (2010).
3799:-space discussed above. For example, in a crystal's 2634:
It is clear that if we specify the set of functions
3722:acting on position space wave functions (under the 2705:holds all the information necessary to reconstruct 2383:is said to be the wave function in momentum space. 239:
Position and momentum spaces in classical mechanics
191:, though the converse can also be true, such as in 4011:Journal of Physics A: Mathematical and Theoretical 3926: 3679: 3536: 3498: 3397: 3313: 3205: 3127: 3089: 3050: 2903: 2793: 2728: 2697: 2667:{\displaystyle \psi _{\mathbf {k} }(\mathbf {r} )} 2666: 2626: 2518: 2375: 2258: 2096: 1982: 1724: 1511: 1254: 1130: 997: 614: 544: 468: 3340: 2756: 2269:Position and momentum spaces in quantum mechanics 688:of the generalized coordinate space Lagrangian; 95:varies with time, it will trace out a path, the 2805:for the denominator notation) with appropriate 1736:′ and the generalized coordinates derived from 2287:. This quantum state can be represented as a 8: 3776:that describes how the wave varies from one 684:is performed to change the variables in the 3986:Quantum Mechanics (Schaum's Outline Series) 3772:for an example. Crystal momentum is like a 2400:Relation between space and reciprocal space 552:the Euler–Lagrange equations take the form 2329:in position space (our ordinary notion of 4077: 4075: 4022: 3669: 3663: 3658: 3650: 3642: 3635: 3623: 3610: 3605: 3604: 3591: 3577: 3568: 3557: 3549: 3526: 3518: 3489: 3481: 3474: 3462: 3448: 3438: 3427: 3417: 3416: 3410: 3387: 3378: 3364: 3355: 3335: 3334: 3332: 3303: 3297: 3292: 3283: 3273: 3272: 3260: 3247: 3242: 3241: 3226: 3218: 3192: 3183: 3173: 3163: 3148: 3140: 3117: 3108: 3102: 3079: 3071: 3062:Functions and operators in momentum space 3043: 3037: 3032: 3024: 3016: 3012: 3000: 2987: 2982: 2981: 2968: 2954: 2945: 2934: 2926: 2894: 2886: 2882: 2869: 2855: 2846: 2835: 2825: 2824: 2818: 2783: 2774: 2751: 2750: 2748: 2721: 2687: 2679: 2656: 2646: 2645: 2639: 2619: 2613: 2608: 2599: 2589: 2588: 2576: 2563: 2558: 2557: 2542: 2534: 2508: 2499: 2489: 2479: 2464: 2456: 2416:Functions and operators in position space 2365: 2357: 2252: 2243: 2225: 2213: 2202: 2201: 2195: 2186: 2168: 2159: 2148: 2147: 2144: 2090: 2081: 2058: 2046: 2035: 2034: 2014: 1999: 1997: 1976: 1967: 1956: 1955: 1935: 1926: 1914: 1905: 1882: 1873: 1862: 1861: 1852: 1843: 1833: 1822: 1821: 1811: 1800: 1799: 1792: 1779: 1768: 1745: 1691: 1677: 1666: 1665: 1652: 1641: 1640: 1620: 1611: 1595: 1572: 1561: 1550: 1530: 1505: 1479: 1467: 1456: 1455: 1445: 1432: 1419: 1408: 1407: 1397: 1386: 1362: 1352: 1341: 1340: 1330: 1319: 1318: 1311: 1298: 1287: 1267: 1246: 1233: 1222: 1221: 1208: 1198: 1187: 1186: 1170: 1159: 1158: 1148: 1142: 1122: 1111: 1110: 1100: 1084: 1073: 1072: 1065: 1046: 1033: 1022: 1021: 1018: 991: 965: 953: 942: 941: 931: 918: 905: 894: 893: 883: 872: 839: 825: 814: 813: 800: 789: 788: 773: 764: 748: 730: 719: 708: 693: 608: 599: 581: 572: 561: 560: 557: 538: 529: 518: 517: 502: 493: 487: 462: 445: 435: 426: 415: 414: 408: 399: 381: 369: 358: 357: 342: 327: 325: 137:obtains the function in momentum space, 55:but in general of any finite dimension. 3979: 3977: 3933:(2nd ed.). John Wiley & Sons. 3917: 3867: 3352: 3128:{\displaystyle \phi _{j}(\mathbf {k} )} 2771: 3954:Hand, Louis N; Finch, Janet D (1998). 3756:, not its normal momentum. Therefore, 149:is useful to define in the context of 4058:. Addison Wesley, Prentice Hall Inc. 3886:, the differential of the product is 680:-tuple of the generalized momenta. A 7: 2420:Suppose we have a three-dimensional 3537:{\displaystyle \phi (\mathbf {k} )} 3090:{\displaystyle \phi (\mathbf {k} )} 2698:{\displaystyle \phi (\mathbf {k} )} 2376:{\displaystyle \phi (\mathbf {k} )} 624:The Lagrangian can be expressed in 187:is more intuitive and simpler than 175:which has dimensions of reciprocal 3659: 3384: 3380: 3361: 3357: 3293: 3033: 2780: 2776: 2609: 2526:or, in the continuous case, as an 2236: 2228: 2179: 2171: 2074: 2061: 2030: 2017: 1951: 1938: 1898: 1885: 1707: 1694: 1636: 1623: 1588: 1575: 1490: 1482: 976: 968: 850: 842: 784: 776: 741: 733: 592: 584: 513: 505: 392: 384: 353: 345: 25: 3925:Eisberg, R.; Resnick, R. (1985). 3827:-space, such that every possible 179:. The set of all wave vectors is 3670: 3651: 3643: 3624: 3606: 3558: 3527: 3513:. So a similar decomposition of 3490: 3482: 3428: 3418: 3388: 3365: 3337: 3304: 3284: 3274: 3261: 3243: 3227: 3193: 3149: 3118: 3080: 3044: 3025: 3017: 3001: 2983: 2935: 2895: 2887: 2836: 2826: 2784: 2753: 2688: 2657: 2647: 2620: 2600: 2590: 2577: 2559: 2543: 2509: 2465: 2366: 203:Heisenberg uncertainty principle 47:, there are two closely related 2283:, a particle is described by a 2199: 1918: 1856: 412: 3768:but play different roles. See 3628: 3620: 3588: 3574: 3562: 3554: 3531: 3523: 3432: 3424: 3288: 3280: 3265: 3257: 3231: 3223: 3197: 3189: 3153: 3145: 3122: 3114: 3084: 3076: 3005: 2997: 2965: 2951: 2939: 2931: 2866: 2852: 2840: 2832: 2692: 2684: 2661: 2653: 2604: 2596: 2581: 2573: 2547: 2539: 2513: 2505: 2469: 2461: 2370: 2362: 2307:the space. If one chooses the 1849: 1785: 1473: 1403: 1368: 1304: 1214: 1182: 1090: 1058: 959: 889: 1: 3988:(2nd ed.). McGraw Hill. 3752:relates almost always to its 3748:) in a crystal, its value of 3730:Reciprocal space and crystals 3856:Fractional Fourier transform 164:-vector") has dimensions of 125:is given in position space, 3726:of the Fourier transform). 478:(One overdot indicates one 168:, making it an analogue of 4137: 3807:which are "equivalent" to 3733: 2739:In quantum mechanics, the 2272: 29: 2341:in terms of the position 4033:10.1088/1751-8121/aa9314 3823:" is a finite volume of 3714:. In physical language, 318:Euler–Lagrange equations 3770:k·p perturbation theory 682:Legendre transformation 314:generalized coordinates 3815:(this is analogous to 3780:to the next, but does 3681: 3538: 3500: 3399: 3315: 3207: 3129: 3091: 3052: 2905: 2795: 2730: 2699: 2668: 2628: 2520: 2396: 2377: 2260: 2098: 1984: 1784: 1726: 1566: 1513: 1402: 1303: 1256: 1132: 999: 888: 724: 616: 546: 470: 121:. In particular, if a 3682: 3539: 3501: 3400: 3316: 3208: 3130: 3092: 3053: 2906: 2796: 2731: 2729:{\displaystyle \psi } 2700: 2669: 2629: 2521: 2393: 2378: 2273:Further information: 2261: 2139:), the equations are 2117:Hamiltonian mechanics 2111:Hamiltonian mechanics 2099: 1985: 1764: 1727: 1546: 1514: 1382: 1283: 1257: 1133: 1000: 868: 704: 617: 547: 471: 3957:Analytical Mechanics 3821:first Brillouin zone 3704:unitarily equivalent 3548: 3517: 3409: 3405:with eigenfunctions 3331: 3217: 3139: 3101: 3070: 2925: 2817: 2747: 2720: 2678: 2638: 2533: 2455: 2356: 2339:Schrödinger equation 2143: 1996: 1744: 1529: 1266: 1141: 1017: 692: 556: 486: 324: 250:Lagrangian mechanics 244:Lagrangian mechanics 70:) is the set of all 4085:The Road to Reality 4082:R. Penrose (2007). 3851:Configuration space 3213:or as an integral, 2408:and the concept of 1740:′ are respectively 277:configuration space 219:de Broglie relation 193:solid-state physics 4054:Abers, E. (2004). 3874:For two functions 3819:). Likewise, the " 3805:reciprocal lattice 3736:Reciprocal lattice 3677: 3534: 3496: 3395: 3311: 3203: 3168: 3125: 3087: 3048: 2901: 2791: 2726: 2695: 2664: 2624: 2516: 2484: 2424:in position space 2397: 2373: 2293:linear combination 2256: 2094: 1980: 1722: 1509: 1252: 1128: 995: 686:total differential 612: 542: 466: 118:Pontryagin duality 103:is the set of all 4121:Quantum mechanics 4095:978-0-679-77631-4 4088:. Vintage books. 4065:978-0-13-146100-0 4056:Quantum Mechanics 3995:978-0-07-162358-2 3967:978-0-521-57572-0 3940:978-0-471-87373-0 3613: 3598: 3585: 3468: 3456: 3393: 3370: 3343: 3325:position operator 3250: 3159: 2990: 2975: 2962: 2876: 2863: 2789: 2759: 2741:momentum operator 2566: 2475: 2406:Fourier transform 2350:momentum operator 2313:position operator 2281:quantum mechanics 2275:Momentum operator 2250: 2210: 2193: 2156: 2088: 2053: 2043: 2012: 1974: 1964: 1912: 1870: 1830: 1808: 1714: 1674: 1659: 1649: 1602: 1497: 1464: 1416: 1349: 1327: 1230: 1195: 1167: 1119: 1081: 1030: 983: 950: 902: 857: 822: 807: 797: 755: 606: 569: 536: 526: 460: 423: 406: 376: 366: 340: 252:, the Lagrangian 199:Quantum mechanics 170:angular frequency 166:reciprocal length 135:Fourier transform 53:three-dimensional 16:(Redirected from 4128: 4100: 4099: 4079: 4070: 4069: 4051: 4045: 4044: 4026: 4006: 4000: 3999: 3981: 3972: 3971: 3951: 3945: 3944: 3932: 3922: 3905: 3903: 3885: 3879: 3872: 3846:Reciprocal space 3754:crystal momentum 3708:unitary operator 3686: 3684: 3683: 3678: 3673: 3668: 3667: 3662: 3656: 3655: 3654: 3646: 3627: 3616: 3615: 3614: 3611: 3609: 3599: 3597: 3596: 3595: 3586: 3578: 3569: 3561: 3543: 3541: 3540: 3535: 3530: 3505: 3503: 3502: 3497: 3495: 3494: 3493: 3485: 3469: 3467: 3466: 3461: 3457: 3449: 3439: 3431: 3423: 3422: 3421: 3404: 3402: 3401: 3396: 3394: 3392: 3391: 3379: 3371: 3369: 3368: 3356: 3345: 3344: 3336: 3320: 3318: 3317: 3312: 3307: 3302: 3301: 3296: 3287: 3279: 3278: 3277: 3264: 3253: 3252: 3251: 3248: 3246: 3230: 3212: 3210: 3209: 3204: 3196: 3188: 3187: 3178: 3177: 3167: 3152: 3134: 3132: 3131: 3126: 3121: 3113: 3112: 3096: 3094: 3093: 3088: 3083: 3057: 3055: 3054: 3049: 3047: 3042: 3041: 3036: 3030: 3029: 3028: 3020: 3004: 2993: 2992: 2991: 2988: 2986: 2976: 2974: 2973: 2972: 2963: 2955: 2946: 2938: 2910: 2908: 2907: 2902: 2900: 2899: 2898: 2890: 2877: 2875: 2874: 2873: 2864: 2856: 2847: 2839: 2831: 2830: 2829: 2800: 2798: 2797: 2792: 2790: 2788: 2787: 2775: 2761: 2760: 2752: 2735: 2733: 2732: 2727: 2715: 2704: 2702: 2701: 2696: 2691: 2673: 2671: 2670: 2665: 2660: 2652: 2651: 2650: 2633: 2631: 2630: 2625: 2623: 2618: 2617: 2612: 2603: 2595: 2594: 2593: 2580: 2569: 2568: 2567: 2564: 2562: 2546: 2525: 2523: 2522: 2517: 2512: 2504: 2503: 2494: 2493: 2483: 2468: 2450: 2434: 2410:frequency domain 2382: 2380: 2379: 2374: 2369: 2337:). The familiar 2328: 2265: 2263: 2262: 2257: 2251: 2249: 2248: 2247: 2234: 2226: 2218: 2217: 2212: 2211: 2203: 2194: 2192: 2191: 2190: 2177: 2169: 2164: 2163: 2158: 2157: 2149: 2103: 2101: 2100: 2095: 2089: 2087: 2086: 2085: 2072: 2071: 2059: 2054: 2052: 2051: 2050: 2045: 2044: 2036: 2028: 2027: 2015: 2013: 2011: 2000: 1989: 1987: 1986: 1981: 1975: 1973: 1972: 1971: 1966: 1965: 1957: 1949: 1948: 1936: 1931: 1930: 1913: 1911: 1910: 1909: 1896: 1895: 1883: 1878: 1877: 1872: 1871: 1863: 1848: 1847: 1838: 1837: 1832: 1831: 1823: 1816: 1815: 1810: 1809: 1801: 1797: 1796: 1783: 1778: 1754: 1731: 1729: 1728: 1723: 1715: 1713: 1705: 1704: 1692: 1687: 1683: 1682: 1681: 1676: 1675: 1667: 1660: 1658: 1657: 1656: 1651: 1650: 1642: 1634: 1633: 1621: 1616: 1615: 1603: 1601: 1600: 1599: 1586: 1585: 1573: 1565: 1560: 1542: 1518: 1516: 1515: 1510: 1498: 1496: 1488: 1480: 1472: 1471: 1466: 1465: 1457: 1450: 1449: 1437: 1436: 1424: 1423: 1418: 1417: 1409: 1401: 1396: 1375: 1371: 1367: 1366: 1357: 1356: 1351: 1350: 1342: 1335: 1334: 1329: 1328: 1320: 1316: 1315: 1302: 1297: 1261: 1259: 1258: 1253: 1251: 1250: 1238: 1237: 1232: 1231: 1223: 1213: 1212: 1203: 1202: 1197: 1196: 1188: 1175: 1174: 1169: 1168: 1160: 1153: 1152: 1137: 1135: 1134: 1129: 1127: 1126: 1121: 1120: 1112: 1105: 1104: 1089: 1088: 1083: 1082: 1074: 1070: 1069: 1051: 1050: 1038: 1037: 1032: 1031: 1023: 1004: 1002: 1001: 996: 984: 982: 974: 966: 958: 957: 952: 951: 943: 936: 935: 923: 922: 910: 909: 904: 903: 895: 887: 882: 858: 856: 848: 840: 835: 831: 830: 829: 824: 823: 815: 808: 806: 805: 804: 799: 798: 790: 782: 774: 769: 768: 756: 754: 753: 752: 739: 731: 723: 718: 621: 619: 618: 613: 607: 605: 604: 603: 590: 582: 577: 576: 571: 570: 562: 551: 549: 548: 543: 537: 535: 534: 533: 528: 527: 519: 511: 503: 498: 497: 475: 473: 472: 467: 461: 459: 451: 450: 449: 436: 431: 430: 425: 424: 416: 407: 405: 404: 403: 390: 382: 377: 375: 374: 373: 368: 367: 359: 351: 343: 341: 339: 328: 106:momentum vectors 99:of a particle.) 73:position vectors 21: 4136: 4135: 4131: 4130: 4129: 4127: 4126: 4125: 4106: 4105: 4104: 4103: 4096: 4081: 4080: 4073: 4066: 4053: 4052: 4048: 4008: 4007: 4003: 3996: 3983: 3982: 3975: 3968: 3960:. p. 190. 3953: 3952: 3948: 3941: 3924: 3923: 3919: 3914: 3909: 3908: 3887: 3881: 3875: 3873: 3869: 3864: 3837: 3764:are not simply 3738: 3732: 3692: 3657: 3631: 3600: 3587: 3573: 3546: 3545: 3515: 3514: 3470: 3444: 3443: 3412: 3407: 3406: 3383: 3360: 3329: 3328: 3291: 3268: 3237: 3215: 3214: 3179: 3169: 3137: 3136: 3104: 3099: 3098: 3068: 3067: 3064: 3031: 3008: 2977: 2964: 2950: 2923: 2922: 2878: 2865: 2851: 2820: 2815: 2814: 2803:matrix calculus 2779: 2745: 2744: 2718: 2717: 2706: 2676: 2675: 2641: 2636: 2635: 2607: 2584: 2553: 2531: 2530: 2495: 2485: 2453: 2452: 2444: 2436: 2425: 2418: 2402: 2354: 2353: 2319: 2277: 2271: 2239: 2235: 2227: 2200: 2182: 2178: 2170: 2146: 2141: 2140: 2113: 2077: 2073: 2064: 2060: 2033: 2029: 2020: 2016: 2004: 1994: 1993: 1954: 1950: 1941: 1937: 1922: 1901: 1897: 1888: 1884: 1860: 1839: 1820: 1798: 1788: 1747: 1742: 1741: 1706: 1697: 1693: 1664: 1639: 1635: 1626: 1622: 1607: 1591: 1587: 1578: 1574: 1571: 1567: 1535: 1527: 1526: 1489: 1481: 1454: 1441: 1428: 1406: 1358: 1339: 1317: 1307: 1276: 1272: 1264: 1263: 1242: 1220: 1204: 1185: 1157: 1144: 1139: 1138: 1109: 1096: 1071: 1061: 1042: 1020: 1015: 1014: 975: 967: 940: 927: 914: 892: 849: 841: 812: 787: 783: 775: 760: 744: 740: 732: 729: 725: 690: 689: 674: 668: 661: 595: 591: 583: 559: 554: 553: 516: 512: 504: 489: 484: 483: 480:time derivative 452: 441: 437: 413: 395: 391: 383: 356: 352: 344: 332: 322: 321: 302: 296: 289: 246: 241: 81:Euclidean space 35: 28: 23: 22: 15: 12: 11: 5: 4134: 4132: 4124: 4123: 4118: 4108: 4107: 4102: 4101: 4094: 4071: 4064: 4046: 4017:(50): 504002. 4001: 3994: 3973: 3966: 3946: 3939: 3916: 3915: 3913: 3910: 3907: 3906: 3866: 3865: 3863: 3860: 3859: 3858: 3853: 3848: 3843: 3836: 3833: 3734:Main article: 3731: 3728: 3702:operators are 3691: 3688: 3676: 3672: 3666: 3661: 3653: 3649: 3645: 3641: 3638: 3634: 3630: 3626: 3622: 3619: 3608: 3603: 3594: 3590: 3584: 3581: 3576: 3572: 3567: 3564: 3560: 3556: 3553: 3533: 3529: 3525: 3522: 3492: 3488: 3484: 3480: 3477: 3473: 3465: 3460: 3455: 3452: 3447: 3442: 3437: 3434: 3430: 3426: 3420: 3415: 3390: 3386: 3382: 3377: 3374: 3367: 3363: 3359: 3354: 3351: 3348: 3342: 3339: 3310: 3306: 3300: 3295: 3290: 3286: 3282: 3276: 3271: 3267: 3263: 3259: 3256: 3245: 3240: 3236: 3233: 3229: 3225: 3222: 3202: 3199: 3195: 3191: 3186: 3182: 3176: 3172: 3166: 3162: 3158: 3155: 3151: 3147: 3144: 3124: 3120: 3116: 3111: 3107: 3086: 3082: 3078: 3075: 3063: 3060: 3046: 3040: 3035: 3027: 3023: 3019: 3015: 3011: 3007: 3003: 2999: 2996: 2985: 2980: 2971: 2967: 2961: 2958: 2953: 2949: 2944: 2941: 2937: 2933: 2930: 2897: 2893: 2889: 2885: 2881: 2872: 2868: 2862: 2859: 2854: 2850: 2845: 2842: 2838: 2834: 2828: 2823: 2811:eigenfunctions 2786: 2782: 2778: 2773: 2770: 2767: 2764: 2758: 2755: 2725: 2694: 2690: 2686: 2683: 2663: 2659: 2655: 2649: 2644: 2622: 2616: 2611: 2606: 2602: 2598: 2592: 2587: 2583: 2579: 2575: 2572: 2561: 2556: 2552: 2549: 2545: 2541: 2538: 2515: 2511: 2507: 2502: 2498: 2492: 2488: 2482: 2478: 2474: 2471: 2467: 2463: 2460: 2440: 2417: 2414: 2401: 2398: 2372: 2368: 2364: 2361: 2309:eigenfunctions 2270: 2267: 2255: 2246: 2242: 2238: 2233: 2230: 2224: 2221: 2216: 2209: 2206: 2198: 2189: 2185: 2181: 2176: 2173: 2167: 2162: 2155: 2152: 2112: 2109: 2093: 2084: 2080: 2076: 2070: 2067: 2063: 2057: 2049: 2042: 2039: 2032: 2026: 2023: 2019: 2010: 2007: 2003: 1979: 1970: 1963: 1960: 1953: 1947: 1944: 1940: 1934: 1929: 1925: 1921: 1917: 1908: 1904: 1900: 1894: 1891: 1887: 1881: 1876: 1869: 1866: 1859: 1855: 1851: 1846: 1842: 1836: 1829: 1826: 1819: 1814: 1807: 1804: 1795: 1791: 1787: 1782: 1777: 1774: 1771: 1767: 1763: 1760: 1757: 1753: 1750: 1721: 1718: 1712: 1709: 1703: 1700: 1696: 1690: 1686: 1680: 1673: 1670: 1663: 1655: 1648: 1645: 1638: 1632: 1629: 1625: 1619: 1614: 1610: 1606: 1598: 1594: 1590: 1584: 1581: 1577: 1570: 1564: 1559: 1556: 1553: 1549: 1545: 1541: 1538: 1534: 1508: 1504: 1501: 1495: 1492: 1487: 1484: 1478: 1475: 1470: 1463: 1460: 1453: 1448: 1444: 1440: 1435: 1431: 1427: 1422: 1415: 1412: 1405: 1400: 1395: 1392: 1389: 1385: 1381: 1378: 1374: 1370: 1365: 1361: 1355: 1348: 1345: 1338: 1333: 1326: 1323: 1314: 1310: 1306: 1301: 1296: 1293: 1290: 1286: 1282: 1279: 1275: 1271: 1249: 1245: 1241: 1236: 1229: 1226: 1219: 1216: 1211: 1207: 1201: 1194: 1191: 1184: 1181: 1178: 1173: 1166: 1163: 1156: 1151: 1147: 1125: 1118: 1115: 1108: 1103: 1099: 1095: 1092: 1087: 1080: 1077: 1068: 1064: 1060: 1057: 1054: 1049: 1045: 1041: 1036: 1029: 1026: 994: 990: 987: 981: 978: 973: 970: 964: 961: 956: 949: 946: 939: 934: 930: 926: 921: 917: 913: 908: 901: 898: 891: 886: 881: 878: 875: 871: 867: 864: 861: 855: 852: 847: 844: 838: 834: 828: 821: 818: 811: 803: 796: 793: 786: 781: 778: 772: 767: 763: 759: 751: 747: 743: 738: 735: 728: 722: 717: 714: 711: 707: 703: 700: 697: 672: 666: 659: 626:momentum space 611: 602: 598: 594: 589: 586: 580: 575: 568: 565: 541: 532: 525: 522: 515: 510: 507: 501: 496: 492: 465: 458: 455: 448: 444: 440: 434: 429: 422: 419: 411: 402: 398: 394: 389: 386: 380: 372: 365: 362: 355: 350: 347: 338: 335: 331: 320:of motion are 300: 294: 287: 248:Most often in 245: 242: 240: 237: 101:Momentum space 93:point particle 57:Position space 32:Momentum Space 26: 24: 18:Momentum space 14: 13: 10: 9: 6: 4: 3: 2: 4133: 4122: 4119: 4117: 4114: 4113: 4111: 4097: 4091: 4087: 4086: 4078: 4076: 4072: 4067: 4061: 4057: 4050: 4047: 4042: 4038: 4034: 4030: 4025: 4020: 4016: 4012: 4005: 4002: 3997: 3991: 3987: 3980: 3978: 3974: 3969: 3963: 3959: 3958: 3950: 3947: 3942: 3936: 3931: 3930: 3921: 3918: 3911: 3902: 3898: 3894: 3890: 3884: 3878: 3871: 3868: 3861: 3857: 3854: 3852: 3849: 3847: 3844: 3842: 3839: 3838: 3834: 3832: 3830: 3826: 3822: 3818: 3814: 3810: 3806: 3802: 3798: 3794: 3790: 3785: 3783: 3779: 3775: 3774:wave envelope 3771: 3767: 3763: 3759: 3755: 3751: 3747: 3743: 3737: 3729: 3727: 3725: 3721: 3717: 3713: 3709: 3705: 3701: 3697: 3689: 3687: 3674: 3664: 3647: 3639: 3636: 3632: 3617: 3601: 3592: 3582: 3579: 3570: 3565: 3551: 3520: 3512: 3509: 3486: 3478: 3475: 3471: 3463: 3458: 3453: 3450: 3445: 3440: 3435: 3413: 3375: 3372: 3349: 3346: 3326: 3321: 3308: 3298: 3269: 3254: 3238: 3234: 3220: 3200: 3184: 3180: 3174: 3170: 3164: 3160: 3156: 3142: 3109: 3105: 3073: 3061: 3059: 3038: 3021: 3013: 3009: 2994: 2978: 2969: 2959: 2956: 2947: 2942: 2928: 2920: 2917: 2914: 2891: 2883: 2879: 2870: 2860: 2857: 2848: 2843: 2821: 2812: 2808: 2804: 2768: 2765: 2762: 2742: 2737: 2723: 2713: 2709: 2681: 2642: 2614: 2585: 2570: 2554: 2550: 2536: 2529: 2500: 2496: 2490: 2486: 2480: 2476: 2472: 2458: 2448: 2443: 2439: 2432: 2428: 2423: 2422:wave function 2415: 2413: 2411: 2407: 2399: 2392: 2388: 2384: 2359: 2351: 2346: 2344: 2340: 2336: 2332: 2326: 2322: 2318: 2317:wave function 2314: 2310: 2306: 2302: 2298: 2294: 2290: 2289:superposition 2286: 2285:quantum state 2282: 2276: 2268: 2266: 2253: 2244: 2240: 2231: 2222: 2219: 2214: 2207: 2204: 2196: 2187: 2183: 2174: 2165: 2160: 2153: 2150: 2138: 2134: 2130: 2126: 2122: 2118: 2110: 2108: 2104: 2091: 2082: 2078: 2068: 2065: 2055: 2047: 2040: 2037: 2024: 2021: 2008: 2005: 2001: 1990: 1977: 1968: 1961: 1958: 1945: 1942: 1932: 1927: 1923: 1919: 1915: 1906: 1902: 1892: 1889: 1879: 1874: 1867: 1864: 1857: 1853: 1844: 1840: 1834: 1827: 1824: 1817: 1812: 1805: 1802: 1793: 1789: 1780: 1775: 1772: 1769: 1765: 1761: 1758: 1755: 1751: 1748: 1739: 1735: 1719: 1716: 1710: 1701: 1698: 1688: 1684: 1678: 1671: 1668: 1661: 1653: 1646: 1643: 1630: 1627: 1617: 1612: 1608: 1604: 1596: 1592: 1582: 1579: 1568: 1562: 1557: 1554: 1551: 1547: 1543: 1539: 1536: 1532: 1524: 1519: 1506: 1502: 1499: 1493: 1485: 1476: 1468: 1461: 1458: 1451: 1446: 1442: 1438: 1433: 1429: 1425: 1420: 1413: 1410: 1398: 1393: 1390: 1387: 1383: 1379: 1376: 1372: 1363: 1359: 1353: 1346: 1343: 1336: 1331: 1324: 1321: 1312: 1308: 1299: 1294: 1291: 1288: 1284: 1280: 1277: 1273: 1269: 1247: 1243: 1239: 1234: 1227: 1224: 1217: 1209: 1205: 1199: 1192: 1189: 1179: 1176: 1171: 1164: 1161: 1154: 1149: 1145: 1123: 1116: 1113: 1106: 1101: 1097: 1093: 1085: 1078: 1075: 1066: 1062: 1055: 1052: 1047: 1043: 1039: 1034: 1027: 1024: 1012: 1008: 992: 988: 985: 979: 971: 962: 954: 947: 944: 937: 932: 928: 924: 919: 915: 911: 906: 899: 896: 884: 879: 876: 873: 869: 865: 862: 859: 853: 845: 836: 832: 826: 819: 816: 809: 801: 794: 791: 779: 770: 765: 761: 757: 749: 745: 736: 726: 720: 715: 712: 709: 705: 701: 698: 695: 687: 683: 679: 675: 665: 658: 654: 650: 646: 642: 639: 635: 631: 627: 622: 609: 600: 596: 587: 578: 573: 566: 563: 539: 530: 523: 520: 508: 499: 494: 490: 481: 476: 463: 456: 453: 446: 442: 438: 432: 427: 420: 417: 409: 400: 396: 387: 378: 370: 363: 360: 348: 336: 333: 329: 319: 315: 311: 307: 303: 293: 286: 282: 278: 274: 270: 266: 263: 259: 255: 251: 243: 238: 236: 234: 230: 227: 223: 220: 216: 212: 208: 204: 200: 196: 194: 190: 186: 182: 178: 174: 171: 167: 163: 159: 156: 152: 146: 144: 140: 136: 132: 128: 124: 120: 119: 113: 111: 108: 107: 102: 98: 94: 90: 86: 82: 78: 75: 74: 69: 67: 62: 58: 54: 50: 49:vector spaces 46: 42: 37: 33: 19: 4083: 4055: 4049: 4014: 4010: 4004: 3985: 3956: 3949: 3928: 3920: 3900: 3896: 3892: 3888: 3882: 3876: 3870: 3828: 3824: 3812: 3808: 3800: 3796: 3792: 3788: 3786: 3781: 3766:proportional 3761: 3757: 3749: 3739: 3719: 3715: 3699: 3695: 3693: 3510: 3327:is given by 3322: 3065: 2918: 2915: 2743:is given by 2738: 2711: 2707: 2446: 2441: 2437: 2430: 2426: 2419: 2403: 2385: 2347: 2342: 2333:in terms of 2324: 2320: 2297:weighted sum 2278: 2136: 2132: 2128: 2124: 2120: 2114: 2105: 1991: 1737: 1733: 1522: 1520: 1011:product rule 1006: 677: 670: 663: 656: 652: 648: 644: 640: 637: 633: 629: 623: 477: 305: 298: 291: 284: 280: 272: 268: 264: 261: 257: 253: 247: 228: 225: 221: 214: 210: 206: 197: 188: 184: 180: 172: 161: 160:(or simply " 157: 147: 142: 138: 133:), then its 130: 126: 116: 114: 109: 104: 100: 76: 71: 64: 60: 56: 38: 36: 3841:Phase space 3706:, with the 3508:eigenvalues 2913:eigenvalues 155:wave vector 4110:Categories 4024:1709.04460 3912:References 3744:(or other 183:. Usually 97:trajectory 85:dimensions 83:, and has 66:coordinate 61:real space 51:, usually 4041:119290497 3862:Footnotes 3778:unit cell 3648:⋅ 3637:− 3618:ψ 3602:∫ 3583:π 3552:ϕ 3521:ϕ 3487:⋅ 3476:− 3454:π 3414:ϕ 3385:∂ 3381:∂ 3362:∂ 3358:∂ 3353:ℏ 3341:^ 3270:ϕ 3255:ψ 3239:∫ 3221:ϕ 3181:ϕ 3171:ψ 3161:∑ 3143:ϕ 3106:ϕ 3074:ϕ 3022:⋅ 2995:ϕ 2979:∫ 2960:π 2929:ψ 2892:⋅ 2861:π 2822:ψ 2781:∂ 2777:∂ 2772:ℏ 2766:− 2757:^ 2724:ψ 2682:ϕ 2643:ψ 2586:ψ 2571:ϕ 2555:∫ 2537:ψ 2497:ψ 2487:ϕ 2477:∑ 2459:ψ 2360:ϕ 2237:∂ 2229:∂ 2223:− 2208:˙ 2180:∂ 2172:∂ 2154:˙ 2075:∂ 2062:∂ 2041:˙ 2031:∂ 2018:∂ 1962:˙ 1952:∂ 1939:∂ 1920:− 1899:∂ 1886:∂ 1868:˙ 1858:− 1828:˙ 1806:˙ 1766:∑ 1762:− 1708:∂ 1695:∂ 1672:˙ 1647:˙ 1637:∂ 1624:∂ 1589:∂ 1576:∂ 1548:∑ 1491:∂ 1483:∂ 1462:˙ 1414:˙ 1384:∑ 1380:− 1347:˙ 1325:˙ 1285:∑ 1281:− 1228:˙ 1218:− 1193:˙ 1165:˙ 1117:˙ 1094:− 1079:˙ 1028:˙ 977:∂ 969:∂ 948:˙ 900:˙ 870:∑ 851:∂ 843:∂ 820:˙ 795:˙ 785:∂ 777:∂ 742:∂ 734:∂ 706:∑ 651:), where 593:∂ 585:∂ 567:˙ 524:˙ 514:∂ 506:∂ 433:≡ 421:˙ 393:∂ 385:∂ 364:˙ 354:∂ 346:∂ 4116:Momentum 3835:See also 3817:aliasing 3746:particle 3742:electron 3712:spectrum 2528:integral 2291:(i.e. a 2069:′ 2025:′ 1946:′ 1893:′ 1752:′ 1702:′ 1631:′ 1583:′ 1540:′ 676:) is an 304:) is an 279:, where 275:) is in 233:momentum 123:function 45:geometry 3740:For an 2311:of the 669:, ..., 312:of the 181:k-space 41:physics 4092:  4062:  4039:  3992:  3964:  3937:  3612:-space 3249:-space 2989:-space 2809:. The 2807:domain 2565:-space 2335:length 1009:. The 628:also, 316:. The 297:,..., 153:. The 89:length 59:(also 4037:S2CID 4019:arXiv 3787:When 3724:image 2921:. So 2801:(see 2331:space 2301:basis 2299:) of 2295:as a 1525:′ is 310:tuple 151:waves 68:space 4090:ISBN 4060:ISBN 3990:ISBN 3962:ISBN 3935:ISBN 3895:) = 3880:and 3760:and 3698:and 3694:The 3506:and 3323:The 2911:and 2813:are 2305:span 177:time 43:and 4029:doi 3901:vdu 3897:udv 3782:not 2279:In 2115:In 655:= ( 283:= ( 87:of 79:in 63:or 39:In 4112:: 4074:^ 4035:. 4027:. 4015:50 4013:. 3976:^ 3899:+ 3893:uv 3811:= 3135:, 2736:. 2451:: 2135:, 2131:, 2121:or 662:, 647:, 645:dt 636:, 632:′( 290:, 271:, 269:dt 260:, 224:= 213:≥ 195:. 4098:. 4068:. 4043:. 4031:: 4021:: 3998:. 3970:. 3943:. 3904:. 3891:( 3889:d 3883:v 3877:u 3829:k 3825:k 3813:0 3809:k 3801:k 3797:k 3793:k 3789:k 3762:p 3758:k 3750:k 3720:r 3716:p 3700:p 3696:r 3675:. 3671:r 3665:3 3660:d 3652:r 3644:k 3640:i 3633:e 3629:) 3625:r 3621:( 3607:r 3593:3 3589:) 3580:2 3575:( 3571:1 3566:= 3563:) 3559:k 3555:( 3532:) 3528:k 3524:( 3511:r 3491:r 3483:k 3479:i 3472:e 3464:3 3459:) 3451:2 3446:( 3441:1 3436:= 3433:) 3429:k 3425:( 3419:r 3389:k 3376:i 3373:= 3366:p 3350:i 3347:= 3338:r 3309:. 3305:r 3299:3 3294:d 3289:) 3285:k 3281:( 3275:r 3266:) 3262:r 3258:( 3244:r 3235:= 3232:) 3228:k 3224:( 3201:, 3198:) 3194:k 3190:( 3185:j 3175:j 3165:j 3157:= 3154:) 3150:k 3146:( 3123:) 3119:k 3115:( 3110:j 3085:) 3081:k 3077:( 3045:k 3039:3 3034:d 3026:r 3018:k 3014:i 3010:e 3006:) 3002:k 2998:( 2984:k 2970:3 2966:) 2957:2 2952:( 2948:1 2943:= 2940:) 2936:r 2932:( 2919:k 2916:ħ 2896:r 2888:k 2884:i 2880:e 2871:3 2867:) 2858:2 2853:( 2849:1 2844:= 2841:) 2837:r 2833:( 2827:k 2785:r 2769:i 2763:= 2754:p 2714:) 2712:r 2710:( 2708:ψ 2693:) 2689:k 2685:( 2662:) 2658:r 2654:( 2648:k 2621:k 2615:3 2610:d 2605:) 2601:r 2597:( 2591:k 2582:) 2578:k 2574:( 2560:k 2551:= 2548:) 2544:r 2540:( 2514:) 2510:r 2506:( 2501:j 2491:j 2481:j 2473:= 2470:) 2466:r 2462:( 2449:) 2447:r 2445:( 2442:j 2438:ψ 2433:) 2431:r 2429:( 2427:ψ 2371:) 2367:k 2363:( 2343:r 2327:) 2325:r 2323:( 2321:ψ 2254:. 2245:i 2241:q 2232:H 2220:= 2215:i 2205:p 2197:, 2188:i 2184:p 2175:H 2166:= 2161:i 2151:q 2137:t 2133:p 2129:q 2127:( 2125:H 2092:. 2083:i 2079:p 2066:L 2056:= 2048:i 2038:p 2022:L 2009:t 2006:d 2002:d 1978:. 1969:i 1959:p 1943:L 1933:= 1928:i 1924:q 1916:, 1907:i 1903:p 1890:L 1880:= 1875:i 1865:q 1854:, 1850:) 1845:i 1841:p 1835:i 1825:q 1818:+ 1813:i 1803:p 1794:i 1790:q 1786:( 1781:n 1776:1 1773:= 1770:i 1759:L 1756:= 1749:L 1738:L 1734:L 1720:t 1717:d 1711:t 1699:L 1689:+ 1685:) 1679:i 1669:p 1662:d 1654:i 1644:p 1628:L 1618:+ 1613:i 1609:p 1605:d 1597:i 1593:p 1580:L 1569:( 1563:n 1558:1 1555:= 1552:i 1544:= 1537:L 1533:d 1523:L 1507:. 1503:t 1500:d 1494:t 1486:L 1477:+ 1474:) 1469:i 1459:p 1452:d 1447:i 1443:q 1439:+ 1434:i 1430:p 1426:d 1421:i 1411:q 1404:( 1399:n 1394:1 1391:= 1388:i 1377:= 1373:] 1369:) 1364:i 1360:p 1354:i 1344:q 1337:+ 1332:i 1322:p 1313:i 1309:q 1305:( 1300:n 1295:1 1292:= 1289:i 1278:L 1274:[ 1270:d 1248:i 1244:p 1240:d 1235:i 1225:q 1215:) 1210:i 1206:p 1200:i 1190:q 1183:( 1180:d 1177:= 1172:i 1162:q 1155:d 1150:i 1146:p 1124:i 1114:p 1107:d 1102:i 1098:q 1091:) 1086:i 1076:p 1067:i 1063:q 1059:( 1056:d 1053:= 1048:i 1044:q 1040:d 1035:i 1025:p 1007:L 993:, 989:t 986:d 980:t 972:L 963:+ 960:) 955:i 945:q 938:d 933:i 929:p 925:+ 920:i 916:q 912:d 907:i 897:p 890:( 885:n 880:1 877:= 874:i 866:= 863:t 860:d 854:t 846:L 837:+ 833:) 827:i 817:q 810:d 802:i 792:q 780:L 771:+ 766:i 762:q 758:d 750:i 746:q 737:L 727:( 721:n 716:1 713:= 710:i 702:= 699:L 696:d 678:n 673:n 671:p 667:2 664:p 660:1 657:p 653:p 649:t 643:/ 641:p 638:d 634:p 630:L 610:. 601:i 597:q 588:L 579:= 574:i 564:p 540:, 531:i 521:q 509:L 500:= 495:i 491:p 464:. 457:t 454:d 447:i 443:q 439:d 428:i 418:q 410:, 401:i 397:q 388:L 379:= 371:i 361:q 349:L 337:t 334:d 330:d 308:- 306:n 301:n 299:q 295:2 292:q 288:1 285:q 281:q 273:t 267:/ 265:q 262:d 258:q 256:( 254:L 229:k 226:ħ 222:p 215:ħ 211:p 209:Δ 207:x 205:Δ 189:k 185:r 173:ω 162:k 158:k 143:p 141:( 139:φ 131:r 129:( 127:f 110:p 77:r 34:. 20:)

Index

Momentum space
Momentum Space
physics
geometry
vector spaces
three-dimensional
coordinate
position vectors
Euclidean space
dimensions
length
point particle
trajectory
momentum vectors
Pontryagin duality
function
Fourier transform
waves
wave vector
reciprocal length
angular frequency
time
solid-state physics
Quantum mechanics
Heisenberg uncertainty principle
de Broglie relation
momentum
Lagrangian mechanics
configuration space
tuple

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