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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).
992: 2401:. 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. 680: 2380: 1977: 1719: 3674: 3045: 463: 137:
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
3308: 2621: 1732: 987:{\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\,,} 3536: 3493: 1517: 2253: 2913: 3392: 2091: 2898: 1506: 312: 3205: 2521: 2788: 1249: 1125: 3200: 2513: 2375:
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.
3397: 2131: 3319: 609: 539: 2805: 1254: 1984: 1972:{\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}}}\,.} 2337:
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
2661: 3669:{\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} .} 1714:{\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} 3040:{\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} } 3122: 3531: 3084: 2692: 2370: 1002:
for differentials allows the exchange of differentials in the generalized coordinates and velocities for the differentials in generalized momenta and their time derivatives,
2735: 1129: 1005: 458:{\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}}\,.} 3127: 2723: 3699:
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
2443: 544: 474: 3303:{\displaystyle \phi (\mathbf {k} )=\int _{\mathbf {r} {\text{-space}}}\psi (\mathbf {r} )\phi _{\mathbf {r} }(\mathbf {k} )\mathrm {d} ^{3}\mathbf {r} .} 2616:{\displaystyle \psi (\mathbf {r} )=\int _{\mathbf {k} {\text{-space}}}\phi (\mathbf {k} )\psi _{\mathbf {k} }(\mathbf {r} )\mathrm {d} ^{3}\mathbf {k} } 220:
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".
4082: 4052: 3982: 3954: 3927: 3488:{\displaystyle \phi _{\mathbf {r} }(\mathbf {k} )={\frac {1}{\left({\sqrt {2\pi }}\right)^{3}}}e^{-i\mathbf {k} \cdot \mathbf {r} }} 2248:{\displaystyle {\dot {q}}_{i}={\frac {\partial H}{\partial p_{i}}}\,,\quad {\dot {p}}_{i}=-{\frac {\partial H}{\partial q_{i}}}\,.} 3387:{\displaystyle \mathbf {\hat {r}} =i\hbar {\frac {\partial }{\partial \mathbf {p} }}=i{\frac {\partial }{\partial \mathbf {k} }}} 2112:
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
3839: 3754: 265: 3844: 2893:{\displaystyle \psi _{\mathbf {k} }(\mathbf {r} )={\frac {1}{({\sqrt {2\pi }})^{3}}}e^{i\mathbf {k} \cdot \mathbf {r} }} 2626: 1501:{\displaystyle d\left=-\sum _{i=1}^{n}({\dot {q}}_{i}dp_{i}+q_{i}d{\dot {p}}_{i})+{\frac {\partial L}{\partial t}}dt\,.} 306: 2086:{\displaystyle {\frac {d}{dt}}{\frac {\partial L'}{\partial {\dot {p}}_{i}}}={\frac {\partial L'}{\partial p_{i}}}\,.} 4109: 3758: 994:
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 .
2277: 2105: 224:" and "wavevector" are used interchangeably. However, the de Broglie relation is not true in a crystal. 191: 134:). Conversely, the inverse Fourier transform of a momentum space function is a position space function. 3809: 3784:-space is still meaningful and extremely useful, but it differs in several ways from the non-crystal 2795: 238: 206:/2 stating that position and momentum cannot be simultaneously known to arbitrary precision, and the 73: 4073: 3712: 207: 181: 4025: 4007: 3793: 3724: 2281: 674: 106: 4104: 4078: 4048: 3978: 3950: 3923: 3313: 2729: 2394: 2338: 2301: 2269: 2263: 187: 158: 154: 123: 54: 4017: 3834: 3762: 3742: 3696: 2398: 2708: 2791: 468: 94: 69: 61: 614: 81: 20: 2783:{\displaystyle \mathbf {\hat {p}} =-i\hbar {\frac {\partial }{\partial \mathbf {r} }}} 4098: 4029: 3916: 2799: 2410: 2305: 2297: 2273: 2292:
states. In principle one is free to choose the set of basis states, as long as they
471:). Introducing the definition of canonical momentum for each generalized coordinate 190:
provides two fundamental examples of the duality between position and momentum, the
2424:, then we can write this functions as a weighted sum of orthogonal basis functions 2285: 1981:
Combining the last two equations gives the momentum space Euler–Lagrange equations
999: 37: 3944: 3829: 3496: 2901: 2293: 1244:{\displaystyle p_{i}d{\dot {q}}_{i}=d({\dot {q}}_{i}p_{i})-{\dot {q}}_{i}dp_{i}} 1120:{\displaystyle {\dot {p}}_{i}dq_{i}=d(q_{i}{\dot {p}}_{i})-q_{i}d{\dot {p}}_{i}} 143: 4021: 3195:{\displaystyle \phi (\mathbf {k} )=\sum _{j}\psi _{j}\phi _{j}(\mathbf {k} ),} 2393:
The momentum representation of a wave function is very closely related to the
85: 2508:{\displaystyle \psi (\mathbf {r} )=\sum _{j}\phi _{j}\psi _{j}(\mathbf {r} )} 3766: 104:
Mathematically, the duality between position and momentum is an example of
80:; a position vector defines a point in space. (If the position vector of a 16:
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.
604:{\displaystyle {\dot {p}}_{i}={\frac {\partial L}{\partial q_{i}}}\,.} 534:{\displaystyle p_{i}={\frac {\partial L}{\partial {\dot {q}}_{i}}}\,,} 3780:
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
19:"Momentum space" redirects here. For the jazz album, see 2304:
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
3792:-space, there is an infinite set of points called the 1251:
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).
3788:-space discussed above. For example, in a crystal's 2623:
It is clear that if we specify the set of functions
3711:acting on position space wave functions (under the 2694:holds all the information necessary to reconstruct 2372:is said to be the wave function in momentum space. 228:
Position and momentum spaces in classical mechanics
180:, though the converse can also be true, such as in 4000:Journal of Physics A: Mathematical and Theoretical 3915: 3668: 3525: 3487: 3386: 3302: 3194: 3116: 3078: 3039: 2892: 2782: 2717: 2686: 2656:{\displaystyle \psi _{\mathbf {k} }(\mathbf {r} )} 2655: 2615: 2507: 2364: 2247: 2085: 1971: 1713: 1500: 1243: 1119: 986: 603: 533: 457: 3329: 2745: 2258:Position and momentum spaces in quantum mechanics 677:of the generalized coordinate space Lagrangian; 84:varies with time, it will trace out a path, the 2794:for the denominator notation) with appropriate 1725:′ and the generalized coordinates derived from 2276:. This quantum state can be represented as a 8: 3765:that describes how the wave varies from one 673:is performed to change the variables in the 3975:Quantum Mechanics (Schaum's Outline Series) 3761:for an example. Crystal momentum is like a 2389:Relation between space and reciprocal space 541:the Euler–Lagrange equations take the form 2318:in position space (our ordinary notion of 4066: 4064: 4011: 3658: 3652: 3647: 3639: 3631: 3624: 3612: 3599: 3594: 3593: 3580: 3566: 3557: 3546: 3538: 3515: 3507: 3478: 3470: 3463: 3451: 3437: 3427: 3416: 3406: 3405: 3399: 3376: 3367: 3353: 3344: 3324: 3323: 3321: 3292: 3286: 3281: 3272: 3262: 3261: 3249: 3236: 3231: 3230: 3215: 3207: 3181: 3172: 3162: 3152: 3137: 3129: 3106: 3097: 3091: 3068: 3060: 3051:Functions and operators in momentum space 3032: 3026: 3021: 3013: 3005: 3001: 2989: 2976: 2971: 2970: 2957: 2943: 2934: 2923: 2915: 2883: 2875: 2871: 2858: 2844: 2835: 2824: 2814: 2813: 2807: 2772: 2763: 2740: 2739: 2737: 2710: 2676: 2668: 2645: 2635: 2634: 2628: 2608: 2602: 2597: 2588: 2578: 2577: 2565: 2552: 2547: 2546: 2531: 2523: 2497: 2488: 2478: 2468: 2453: 2445: 2405:Functions and operators in position space 2354: 2346: 2241: 2232: 2214: 2202: 2191: 2190: 2184: 2175: 2157: 2148: 2137: 2136: 2133: 2079: 2070: 2047: 2035: 2024: 2023: 2003: 1988: 1986: 1965: 1956: 1945: 1944: 1924: 1915: 1903: 1894: 1871: 1862: 1851: 1850: 1841: 1832: 1822: 1811: 1810: 1800: 1789: 1788: 1781: 1768: 1757: 1734: 1680: 1666: 1655: 1654: 1641: 1630: 1629: 1609: 1600: 1584: 1561: 1550: 1539: 1519: 1494: 1468: 1456: 1445: 1444: 1434: 1421: 1408: 1397: 1396: 1386: 1375: 1351: 1341: 1330: 1329: 1319: 1308: 1307: 1300: 1287: 1276: 1256: 1235: 1222: 1211: 1210: 1197: 1187: 1176: 1175: 1159: 1148: 1147: 1137: 1131: 1111: 1100: 1099: 1089: 1073: 1062: 1061: 1054: 1035: 1022: 1011: 1010: 1007: 980: 954: 942: 931: 930: 920: 907: 894: 883: 882: 872: 861: 828: 814: 803: 802: 789: 778: 777: 762: 753: 737: 719: 708: 697: 682: 597: 588: 570: 561: 550: 549: 546: 527: 518: 507: 506: 491: 482: 476: 451: 434: 424: 415: 404: 403: 397: 388: 370: 358: 347: 346: 331: 316: 314: 126:obtains the function in momentum space, 44:but in general of any finite dimension. 3968: 3966: 3922:(2nd ed.). John Wiley & Sons. 3906: 3856: 3341: 3117:{\displaystyle \phi _{j}(\mathbf {k} )} 2760: 3943:Hand, Louis N; Finch, Janet D (1998). 3745:, not its normal momentum. Therefore, 138:is useful to define in the context of 4047:. Addison Wesley, Prentice Hall Inc. 3875:, the differential of the product is 669:-tuple of the generalized momenta. A 7: 2409:Suppose we have a three-dimensional 3526:{\displaystyle \phi (\mathbf {k} )} 3079:{\displaystyle \phi (\mathbf {k} )} 2687:{\displaystyle \phi (\mathbf {k} )} 2365:{\displaystyle \phi (\mathbf {k} )} 613:The Lagrangian can be expressed in 176:is more intuitive and simpler than 164:which has dimensions of reciprocal 3648: 3373: 3369: 3350: 3346: 3282: 3022: 2769: 2765: 2598: 2515:or, in the continuous case, as an 2225: 2217: 2168: 2160: 2063: 2050: 2019: 2006: 1940: 1927: 1887: 1874: 1696: 1683: 1625: 1612: 1577: 1564: 1479: 1471: 965: 957: 839: 831: 773: 765: 730: 722: 581: 573: 502: 494: 381: 373: 342: 334: 14: 3914:Eisberg, R.; Resnick, R. (1985). 3816:-space, such that every possible 168:. The set of all wave vectors is 3659: 3640: 3632: 3613: 3595: 3547: 3516: 3502:. So a similar decomposition of 3479: 3471: 3417: 3407: 3377: 3354: 3326: 3293: 3273: 3263: 3250: 3232: 3216: 3182: 3138: 3107: 3069: 3033: 3014: 3006: 2990: 2972: 2924: 2884: 2876: 2825: 2815: 2773: 2742: 2677: 2646: 2636: 2609: 2589: 2579: 2566: 2548: 2532: 2498: 2454: 2355: 192:Heisenberg uncertainty principle 36:, there are two closely related 2272:, a particle is described by a 2188: 1907: 1845: 401: 3757:but play different roles. See 3617: 3609: 3577: 3563: 3551: 3543: 3520: 3512: 3421: 3413: 3277: 3269: 3254: 3246: 3220: 3212: 3186: 3178: 3142: 3134: 3111: 3103: 3073: 3065: 2994: 2986: 2954: 2940: 2928: 2920: 2855: 2841: 2829: 2821: 2681: 2673: 2650: 2642: 2593: 2585: 2570: 2562: 2536: 2528: 2502: 2494: 2458: 2450: 2359: 2351: 2296:the space. If one chooses the 1838: 1774: 1462: 1392: 1357: 1293: 1203: 1171: 1079: 1047: 948: 878: 1: 3977:(2nd ed.). McGraw Hill. 3741:relates almost always to its 3737:) in a crystal, its value of 3719:Reciprocal space and crystals 3845:Fractional Fourier transform 153:-vector") has dimensions of 114:is given in position space, 3715:of the Fourier transform). 467:(One overdot indicates one 157:, making it an analogue of 4126: 3796:which are "equivalent" to 3722: 2728:In quantum mechanics, the 2261: 18: 2330:in terms of the position 4022:10.1088/1751-8121/aa9314 3812:" is a finite volume of 3703:. In physical language, 307:Euler–Lagrange equations 3759:k·p perturbation theory 671:Legendre transformation 303:generalized coordinates 3804:(this is analogous to 3769:to the next, but does 3670: 3527: 3489: 3388: 3304: 3196: 3118: 3080: 3041: 2894: 2784: 2719: 2688: 2657: 2617: 2509: 2385: 2366: 2249: 2087: 1973: 1773: 1715: 1555: 1502: 1391: 1292: 1245: 1121: 988: 877: 713: 605: 535: 459: 110:. In particular, if a 3671: 3528: 3490: 3389: 3305: 3197: 3119: 3081: 3042: 2895: 2785: 2720: 2718:{\displaystyle \psi } 2689: 2658: 2618: 2510: 2382: 2367: 2262:Further information: 2250: 2128:), the equations are 2106:Hamiltonian mechanics 2100:Hamiltonian mechanics 2088: 1974: 1753: 1716: 1535: 1503: 1371: 1272: 1246: 1122: 989: 857: 693: 606: 536: 460: 3946:Analytical Mechanics 3810:first Brillouin zone 3693:unitarily equivalent 3537: 3506: 3398: 3394:with eigenfunctions 3320: 3206: 3128: 3090: 3059: 2914: 2806: 2736: 2709: 2667: 2627: 2522: 2444: 2345: 2328:Schrödinger equation 2132: 1985: 1733: 1518: 1255: 1130: 1006: 681: 545: 475: 313: 239:Lagrangian mechanics 233:Lagrangian mechanics 59:) is the set of all 4074:The Road to Reality 4071:R. Penrose (2007). 3840:Configuration space 3202:or as an integral, 2397:and the concept of 1729:′ are respectively 266:configuration space 208:de Broglie relation 182:solid-state physics 4043:Abers, E. (2004). 3863:For two functions 3808:). Likewise, the " 3794:reciprocal lattice 3725:Reciprocal lattice 3666: 3523: 3485: 3384: 3300: 3192: 3157: 3114: 3076: 3037: 2890: 2780: 2715: 2684: 2653: 2613: 2505: 2473: 2413:in position space 2386: 2362: 2282:linear combination 2245: 2083: 1969: 1711: 1498: 1241: 1117: 984: 675:total differential 601: 531: 455: 107:Pontryagin duality 92:is the set of all 4110:Quantum mechanics 4084:978-0-679-77631-4 4077:. Vintage books. 4054:978-0-13-146100-0 4045:Quantum Mechanics 3984:978-0-07-162358-2 3956:978-0-521-57572-0 3929:978-0-471-87373-0 3602: 3587: 3574: 3457: 3445: 3382: 3359: 3332: 3314:position operator 3239: 3148: 2979: 2964: 2951: 2865: 2852: 2778: 2748: 2730:momentum operator 2555: 2464: 2395:Fourier transform 2339:momentum operator 2302:position operator 2270:quantum mechanics 2264:Momentum operator 2239: 2199: 2182: 2145: 2077: 2042: 2032: 2001: 1963: 1953: 1901: 1859: 1819: 1797: 1703: 1663: 1648: 1638: 1591: 1486: 1453: 1405: 1338: 1316: 1219: 1184: 1156: 1108: 1070: 1019: 972: 939: 891: 846: 811: 796: 786: 744: 595: 558: 525: 515: 449: 412: 395: 365: 355: 329: 241:, the Lagrangian 188:Quantum mechanics 159:angular frequency 155:reciprocal length 124:Fourier transform 42:three-dimensional 4117: 4089: 4088: 4068: 4059: 4058: 4040: 4034: 4033: 4015: 3995: 3989: 3988: 3970: 3961: 3960: 3940: 3934: 3933: 3921: 3911: 3894: 3892: 3874: 3868: 3861: 3835:Reciprocal space 3743:crystal momentum 3697:unitary operator 3675: 3673: 3672: 3667: 3662: 3657: 3656: 3651: 3645: 3644: 3643: 3635: 3616: 3605: 3604: 3603: 3600: 3598: 3588: 3586: 3585: 3584: 3575: 3567: 3558: 3550: 3532: 3530: 3529: 3524: 3519: 3494: 3492: 3491: 3486: 3484: 3483: 3482: 3474: 3458: 3456: 3455: 3450: 3446: 3438: 3428: 3420: 3412: 3411: 3410: 3393: 3391: 3390: 3385: 3383: 3381: 3380: 3368: 3360: 3358: 3357: 3345: 3334: 3333: 3325: 3309: 3307: 3306: 3301: 3296: 3291: 3290: 3285: 3276: 3268: 3267: 3266: 3253: 3242: 3241: 3240: 3237: 3235: 3219: 3201: 3199: 3198: 3193: 3185: 3177: 3176: 3167: 3166: 3156: 3141: 3123: 3121: 3120: 3115: 3110: 3102: 3101: 3085: 3083: 3082: 3077: 3072: 3046: 3044: 3043: 3038: 3036: 3031: 3030: 3025: 3019: 3018: 3017: 3009: 2993: 2982: 2981: 2980: 2977: 2975: 2965: 2963: 2962: 2961: 2952: 2944: 2935: 2927: 2899: 2897: 2896: 2891: 2889: 2888: 2887: 2879: 2866: 2864: 2863: 2862: 2853: 2845: 2836: 2828: 2820: 2819: 2818: 2789: 2787: 2786: 2781: 2779: 2777: 2776: 2764: 2750: 2749: 2741: 2724: 2722: 2721: 2716: 2704: 2693: 2691: 2690: 2685: 2680: 2662: 2660: 2659: 2654: 2649: 2641: 2640: 2639: 2622: 2620: 2619: 2614: 2612: 2607: 2606: 2601: 2592: 2584: 2583: 2582: 2569: 2558: 2557: 2556: 2553: 2551: 2535: 2514: 2512: 2511: 2506: 2501: 2493: 2492: 2483: 2482: 2472: 2457: 2439: 2423: 2399:frequency domain 2371: 2369: 2368: 2363: 2358: 2326:). The familiar 2317: 2254: 2252: 2251: 2246: 2240: 2238: 2237: 2236: 2223: 2215: 2207: 2206: 2201: 2200: 2192: 2183: 2181: 2180: 2179: 2166: 2158: 2153: 2152: 2147: 2146: 2138: 2092: 2090: 2089: 2084: 2078: 2076: 2075: 2074: 2061: 2060: 2048: 2043: 2041: 2040: 2039: 2034: 2033: 2025: 2017: 2016: 2004: 2002: 2000: 1989: 1978: 1976: 1975: 1970: 1964: 1962: 1961: 1960: 1955: 1954: 1946: 1938: 1937: 1925: 1920: 1919: 1902: 1900: 1899: 1898: 1885: 1884: 1872: 1867: 1866: 1861: 1860: 1852: 1837: 1836: 1827: 1826: 1821: 1820: 1812: 1805: 1804: 1799: 1798: 1790: 1786: 1785: 1772: 1767: 1743: 1720: 1718: 1717: 1712: 1704: 1702: 1694: 1693: 1681: 1676: 1672: 1671: 1670: 1665: 1664: 1656: 1649: 1647: 1646: 1645: 1640: 1639: 1631: 1623: 1622: 1610: 1605: 1604: 1592: 1590: 1589: 1588: 1575: 1574: 1562: 1554: 1549: 1531: 1507: 1505: 1504: 1499: 1487: 1485: 1477: 1469: 1461: 1460: 1455: 1454: 1446: 1439: 1438: 1426: 1425: 1413: 1412: 1407: 1406: 1398: 1390: 1385: 1364: 1360: 1356: 1355: 1346: 1345: 1340: 1339: 1331: 1324: 1323: 1318: 1317: 1309: 1305: 1304: 1291: 1286: 1250: 1248: 1247: 1242: 1240: 1239: 1227: 1226: 1221: 1220: 1212: 1202: 1201: 1192: 1191: 1186: 1185: 1177: 1164: 1163: 1158: 1157: 1149: 1142: 1141: 1126: 1124: 1123: 1118: 1116: 1115: 1110: 1109: 1101: 1094: 1093: 1078: 1077: 1072: 1071: 1063: 1059: 1058: 1040: 1039: 1027: 1026: 1021: 1020: 1012: 993: 991: 990: 985: 973: 971: 963: 955: 947: 946: 941: 940: 932: 925: 924: 912: 911: 899: 898: 893: 892: 884: 876: 871: 847: 845: 837: 829: 824: 820: 819: 818: 813: 812: 804: 797: 795: 794: 793: 788: 787: 779: 771: 763: 758: 757: 745: 743: 742: 741: 728: 720: 712: 707: 610: 608: 607: 602: 596: 594: 593: 592: 579: 571: 566: 565: 560: 559: 551: 540: 538: 537: 532: 526: 524: 523: 522: 517: 516: 508: 500: 492: 487: 486: 464: 462: 461: 456: 450: 448: 440: 439: 438: 425: 420: 419: 414: 413: 405: 396: 394: 393: 392: 379: 371: 366: 364: 363: 362: 357: 356: 348: 340: 332: 330: 328: 317: 95:momentum vectors 88:of a particle.) 62:position vectors 4125: 4124: 4120: 4119: 4118: 4116: 4115: 4114: 4095: 4094: 4093: 4092: 4085: 4070: 4069: 4062: 4055: 4042: 4041: 4037: 3997: 3996: 3992: 3985: 3972: 3971: 3964: 3957: 3949:. p. 190. 3942: 3941: 3937: 3930: 3913: 3912: 3908: 3903: 3898: 3897: 3876: 3870: 3864: 3862: 3858: 3853: 3826: 3753:are not simply 3727: 3721: 3681: 3646: 3620: 3589: 3576: 3562: 3535: 3534: 3504: 3503: 3459: 3433: 3432: 3401: 3396: 3395: 3372: 3349: 3318: 3317: 3280: 3257: 3226: 3204: 3203: 3168: 3158: 3126: 3125: 3093: 3088: 3087: 3057: 3056: 3053: 3020: 2997: 2966: 2953: 2939: 2912: 2911: 2867: 2854: 2840: 2809: 2804: 2803: 2792:matrix calculus 2768: 2734: 2733: 2707: 2706: 2695: 2665: 2664: 2630: 2625: 2624: 2596: 2573: 2542: 2520: 2519: 2484: 2474: 2442: 2441: 2433: 2425: 2414: 2407: 2391: 2343: 2342: 2308: 2266: 2260: 2228: 2224: 2216: 2189: 2171: 2167: 2159: 2135: 2130: 2129: 2102: 2066: 2062: 2053: 2049: 2022: 2018: 2009: 2005: 1993: 1983: 1982: 1943: 1939: 1930: 1926: 1911: 1890: 1886: 1877: 1873: 1849: 1828: 1809: 1787: 1777: 1736: 1731: 1730: 1695: 1686: 1682: 1653: 1628: 1624: 1615: 1611: 1596: 1580: 1576: 1567: 1563: 1560: 1556: 1524: 1516: 1515: 1478: 1470: 1443: 1430: 1417: 1395: 1347: 1328: 1306: 1296: 1265: 1261: 1253: 1252: 1231: 1209: 1193: 1174: 1146: 1133: 1128: 1127: 1098: 1085: 1060: 1050: 1031: 1009: 1004: 1003: 964: 956: 929: 916: 903: 881: 838: 830: 801: 776: 772: 764: 749: 733: 729: 721: 718: 714: 679: 678: 663: 657: 650: 584: 580: 572: 548: 543: 542: 505: 501: 493: 478: 473: 472: 469:time derivative 441: 430: 426: 402: 384: 380: 372: 345: 341: 333: 321: 311: 310: 291: 285: 278: 235: 230: 70:Euclidean space 24: 17: 12: 11: 5: 4123: 4121: 4113: 4112: 4107: 4097: 4096: 4091: 4090: 4083: 4060: 4053: 4035: 4006:(50): 504002. 3990: 3983: 3962: 3955: 3935: 3928: 3905: 3904: 3902: 3899: 3896: 3895: 3855: 3854: 3852: 3849: 3848: 3847: 3842: 3837: 3832: 3825: 3822: 3723:Main article: 3720: 3717: 3691:operators are 3680: 3677: 3665: 3661: 3655: 3650: 3642: 3638: 3634: 3630: 3627: 3623: 3619: 3615: 3611: 3608: 3597: 3592: 3583: 3579: 3573: 3570: 3565: 3561: 3556: 3553: 3549: 3545: 3542: 3522: 3518: 3514: 3511: 3481: 3477: 3473: 3469: 3466: 3462: 3454: 3449: 3444: 3441: 3436: 3431: 3426: 3423: 3419: 3415: 3409: 3404: 3379: 3375: 3371: 3366: 3363: 3356: 3352: 3348: 3343: 3340: 3337: 3331: 3328: 3299: 3295: 3289: 3284: 3279: 3275: 3271: 3265: 3260: 3256: 3252: 3248: 3245: 3234: 3229: 3225: 3222: 3218: 3214: 3211: 3191: 3188: 3184: 3180: 3175: 3171: 3165: 3161: 3155: 3151: 3147: 3144: 3140: 3136: 3133: 3113: 3109: 3105: 3100: 3096: 3075: 3071: 3067: 3064: 3052: 3049: 3035: 3029: 3024: 3016: 3012: 3008: 3004: 3000: 2996: 2992: 2988: 2985: 2974: 2969: 2960: 2956: 2950: 2947: 2942: 2938: 2933: 2930: 2926: 2922: 2919: 2886: 2882: 2878: 2874: 2870: 2861: 2857: 2851: 2848: 2843: 2839: 2834: 2831: 2827: 2823: 2817: 2812: 2800:eigenfunctions 2775: 2771: 2767: 2762: 2759: 2756: 2753: 2747: 2744: 2714: 2683: 2679: 2675: 2672: 2652: 2648: 2644: 2638: 2633: 2611: 2605: 2600: 2595: 2591: 2587: 2581: 2576: 2572: 2568: 2564: 2561: 2550: 2545: 2541: 2538: 2534: 2530: 2527: 2504: 2500: 2496: 2491: 2487: 2481: 2477: 2471: 2467: 2463: 2460: 2456: 2452: 2449: 2429: 2406: 2403: 2390: 2387: 2361: 2357: 2353: 2350: 2298:eigenfunctions 2259: 2256: 2244: 2235: 2231: 2227: 2222: 2219: 2213: 2210: 2205: 2198: 2195: 2187: 2178: 2174: 2170: 2165: 2162: 2156: 2151: 2144: 2141: 2101: 2098: 2082: 2073: 2069: 2065: 2059: 2056: 2052: 2046: 2038: 2031: 2028: 2021: 2015: 2012: 2008: 1999: 1996: 1992: 1968: 1959: 1952: 1949: 1942: 1936: 1933: 1929: 1923: 1918: 1914: 1910: 1906: 1897: 1893: 1889: 1883: 1880: 1876: 1870: 1865: 1858: 1855: 1848: 1844: 1840: 1835: 1831: 1825: 1818: 1815: 1808: 1803: 1796: 1793: 1784: 1780: 1776: 1771: 1766: 1763: 1760: 1756: 1752: 1749: 1746: 1742: 1739: 1710: 1707: 1701: 1698: 1692: 1689: 1685: 1679: 1675: 1669: 1662: 1659: 1652: 1644: 1637: 1634: 1627: 1621: 1618: 1614: 1608: 1603: 1599: 1595: 1587: 1583: 1579: 1573: 1570: 1566: 1559: 1553: 1548: 1545: 1542: 1538: 1534: 1530: 1527: 1523: 1497: 1493: 1490: 1484: 1481: 1476: 1473: 1467: 1464: 1459: 1452: 1449: 1442: 1437: 1433: 1429: 1424: 1420: 1416: 1411: 1404: 1401: 1394: 1389: 1384: 1381: 1378: 1374: 1370: 1367: 1363: 1359: 1354: 1350: 1344: 1337: 1334: 1327: 1322: 1315: 1312: 1303: 1299: 1295: 1290: 1285: 1282: 1279: 1275: 1271: 1268: 1264: 1260: 1238: 1234: 1230: 1225: 1218: 1215: 1208: 1205: 1200: 1196: 1190: 1183: 1180: 1173: 1170: 1167: 1162: 1155: 1152: 1145: 1140: 1136: 1114: 1107: 1104: 1097: 1092: 1088: 1084: 1081: 1076: 1069: 1066: 1057: 1053: 1049: 1046: 1043: 1038: 1034: 1030: 1025: 1018: 1015: 983: 979: 976: 970: 967: 962: 959: 953: 950: 945: 938: 935: 928: 923: 919: 915: 910: 906: 902: 897: 890: 887: 880: 875: 870: 867: 864: 860: 856: 853: 850: 844: 841: 836: 833: 827: 823: 817: 810: 807: 800: 792: 785: 782: 775: 770: 767: 761: 756: 752: 748: 740: 736: 732: 727: 724: 717: 711: 706: 703: 700: 696: 692: 689: 686: 661: 655: 648: 615:momentum space 600: 591: 587: 583: 578: 575: 569: 564: 557: 554: 530: 521: 514: 511: 504: 499: 496: 490: 485: 481: 454: 447: 444: 437: 433: 429: 423: 418: 411: 408: 400: 391: 387: 383: 378: 375: 369: 361: 354: 351: 344: 339: 336: 327: 324: 320: 309:of motion are 289: 283: 276: 237:Most often in 234: 231: 229: 226: 90:Momentum space 82:point particle 46:Position space 21:Momentum Space 15: 13: 10: 9: 6: 4: 3: 2: 4122: 4111: 4108: 4106: 4103: 4102: 4100: 4086: 4080: 4076: 4075: 4067: 4065: 4061: 4056: 4050: 4046: 4039: 4036: 4031: 4027: 4023: 4019: 4014: 4009: 4005: 4001: 3994: 3991: 3986: 3980: 3976: 3969: 3967: 3963: 3958: 3952: 3948: 3947: 3939: 3936: 3931: 3925: 3920: 3919: 3910: 3907: 3900: 3891: 3887: 3883: 3879: 3873: 3867: 3860: 3857: 3850: 3846: 3843: 3841: 3838: 3836: 3833: 3831: 3828: 3827: 3823: 3821: 3819: 3815: 3811: 3807: 3803: 3799: 3795: 3791: 3787: 3783: 3779: 3774: 3772: 3768: 3764: 3763:wave envelope 3760: 3756: 3752: 3748: 3744: 3740: 3736: 3732: 3726: 3718: 3716: 3714: 3710: 3706: 3702: 3698: 3694: 3690: 3686: 3678: 3676: 3663: 3653: 3636: 3628: 3625: 3621: 3606: 3590: 3581: 3571: 3568: 3559: 3554: 3540: 3509: 3501: 3498: 3475: 3467: 3464: 3460: 3452: 3447: 3442: 3439: 3434: 3429: 3424: 3402: 3364: 3361: 3338: 3335: 3315: 3310: 3297: 3287: 3258: 3243: 3227: 3223: 3209: 3189: 3173: 3169: 3163: 3159: 3153: 3149: 3145: 3131: 3098: 3094: 3062: 3050: 3048: 3027: 3010: 3002: 2998: 2983: 2967: 2958: 2948: 2945: 2936: 2931: 2917: 2909: 2906: 2903: 2880: 2872: 2868: 2859: 2849: 2846: 2837: 2832: 2810: 2801: 2797: 2793: 2757: 2754: 2751: 2731: 2726: 2712: 2702: 2698: 2670: 2631: 2603: 2574: 2559: 2543: 2539: 2525: 2518: 2489: 2485: 2479: 2475: 2469: 2465: 2461: 2447: 2437: 2432: 2428: 2421: 2417: 2412: 2411:wave function 2404: 2402: 2400: 2396: 2388: 2381: 2377: 2373: 2348: 2340: 2335: 2333: 2329: 2325: 2321: 2315: 2311: 2307: 2306:wave function 2303: 2299: 2295: 2291: 2287: 2283: 2279: 2278:superposition 2275: 2274:quantum state 2271: 2265: 2257: 2255: 2242: 2233: 2229: 2220: 2211: 2208: 2203: 2196: 2193: 2185: 2176: 2172: 2163: 2154: 2149: 2142: 2139: 2127: 2123: 2119: 2115: 2111: 2107: 2099: 2097: 2093: 2080: 2071: 2067: 2057: 2054: 2044: 2036: 2029: 2026: 2013: 2010: 1997: 1994: 1990: 1979: 1966: 1957: 1950: 1947: 1934: 1931: 1921: 1916: 1912: 1908: 1904: 1895: 1891: 1881: 1878: 1868: 1863: 1856: 1853: 1846: 1842: 1833: 1829: 1823: 1816: 1813: 1806: 1801: 1794: 1791: 1782: 1778: 1769: 1764: 1761: 1758: 1754: 1750: 1747: 1744: 1740: 1737: 1728: 1724: 1708: 1705: 1699: 1690: 1687: 1677: 1673: 1667: 1660: 1657: 1650: 1642: 1635: 1632: 1619: 1616: 1606: 1601: 1597: 1593: 1585: 1581: 1571: 1568: 1557: 1551: 1546: 1543: 1540: 1536: 1532: 1528: 1525: 1521: 1513: 1508: 1495: 1491: 1488: 1482: 1474: 1465: 1457: 1450: 1447: 1440: 1435: 1431: 1427: 1422: 1418: 1414: 1409: 1402: 1399: 1387: 1382: 1379: 1376: 1372: 1368: 1365: 1361: 1352: 1348: 1342: 1335: 1332: 1325: 1320: 1313: 1310: 1301: 1297: 1288: 1283: 1280: 1277: 1273: 1269: 1266: 1262: 1258: 1236: 1232: 1228: 1223: 1216: 1213: 1206: 1198: 1194: 1188: 1181: 1178: 1168: 1165: 1160: 1153: 1150: 1143: 1138: 1134: 1112: 1105: 1102: 1095: 1090: 1086: 1082: 1074: 1067: 1064: 1055: 1051: 1044: 1041: 1036: 1032: 1028: 1023: 1016: 1013: 1001: 997: 981: 977: 974: 968: 960: 951: 943: 936: 933: 926: 921: 917: 913: 908: 904: 900: 895: 888: 885: 873: 868: 865: 862: 858: 854: 851: 848: 842: 834: 825: 821: 815: 808: 805: 798: 790: 783: 780: 768: 759: 754: 750: 746: 738: 734: 725: 715: 709: 704: 701: 698: 694: 690: 687: 684: 676: 672: 668: 664: 654: 647: 643: 639: 635: 631: 628: 624: 620: 616: 611: 598: 589: 585: 576: 567: 562: 555: 552: 528: 519: 512: 509: 497: 488: 483: 479: 470: 465: 452: 445: 442: 435: 431: 427: 421: 416: 409: 406: 398: 389: 385: 376: 367: 359: 352: 349: 337: 325: 322: 318: 308: 304: 300: 296: 292: 282: 275: 271: 267: 263: 259: 255: 252: 248: 244: 240: 232: 227: 225: 223: 219: 216: 212: 209: 205: 201: 197: 193: 189: 185: 183: 179: 175: 171: 167: 163: 160: 156: 152: 148: 145: 141: 135: 133: 129: 125: 121: 117: 113: 109: 108: 102: 100: 97: 96: 91: 87: 83: 79: 75: 71: 67: 64: 63: 58: 56: 51: 47: 43: 39: 38:vector spaces 35: 31: 26: 22: 4072: 4044: 4038: 4003: 3999: 3993: 3974: 3945: 3938: 3917: 3909: 3889: 3885: 3881: 3877: 3871: 3865: 3859: 3817: 3813: 3801: 3797: 3789: 3785: 3781: 3777: 3775: 3770: 3755:proportional 3750: 3746: 3738: 3728: 3708: 3704: 3688: 3684: 3682: 3499: 3316:is given by 3311: 3054: 2907: 2904: 2732:is given by 2727: 2700: 2696: 2435: 2430: 2426: 2419: 2415: 2408: 2392: 2374: 2336: 2331: 2322:in terms of 2313: 2309: 2286:weighted sum 2267: 2125: 2121: 2117: 2113: 2109: 2103: 2094: 1980: 1726: 1722: 1511: 1509: 1000:product rule 995: 666: 659: 652: 645: 641: 637: 633: 629: 626: 622: 618: 612: 466: 294: 287: 280: 273: 269: 261: 257: 253: 250: 246: 242: 236: 217: 214: 210: 203: 199: 195: 186: 177: 173: 169: 161: 150: 149:(or simply " 146: 136: 131: 127: 122:), then its 119: 115: 105: 103: 98: 93: 89: 65: 60: 53: 49: 45: 27: 25: 3830:Phase space 3695:, with the 3497:eigenvalues 2902:eigenvalues 144:wave vector 4099:Categories 4013:1709.04460 3901:References 3733:(or other 172:. Usually 86:trajectory 74:dimensions 72:, and has 55:coordinate 50:real space 40:, usually 4030:119290497 3851:Footnotes 3767:unit cell 3637:⋅ 3626:− 3607:ψ 3591:∫ 3572:π 3541:ϕ 3510:ϕ 3476:⋅ 3465:− 3443:π 3403:ϕ 3374:∂ 3370:∂ 3351:∂ 3347:∂ 3342:ℏ 3330:^ 3259:ϕ 3244:ψ 3228:∫ 3210:ϕ 3170:ϕ 3160:ψ 3150:∑ 3132:ϕ 3095:ϕ 3063:ϕ 3011:⋅ 2984:ϕ 2968:∫ 2949:π 2918:ψ 2881:⋅ 2850:π 2811:ψ 2770:∂ 2766:∂ 2761:ℏ 2755:− 2746:^ 2713:ψ 2671:ϕ 2632:ψ 2575:ψ 2560:ϕ 2544:∫ 2526:ψ 2486:ψ 2476:ϕ 2466:∑ 2448:ψ 2349:ϕ 2226:∂ 2218:∂ 2212:− 2197:˙ 2169:∂ 2161:∂ 2143:˙ 2064:∂ 2051:∂ 2030:˙ 2020:∂ 2007:∂ 1951:˙ 1941:∂ 1928:∂ 1909:− 1888:∂ 1875:∂ 1857:˙ 1847:− 1817:˙ 1795:˙ 1755:∑ 1751:− 1697:∂ 1684:∂ 1661:˙ 1636:˙ 1626:∂ 1613:∂ 1578:∂ 1565:∂ 1537:∑ 1480:∂ 1472:∂ 1451:˙ 1403:˙ 1373:∑ 1369:− 1336:˙ 1314:˙ 1274:∑ 1270:− 1217:˙ 1207:− 1182:˙ 1154:˙ 1106:˙ 1083:− 1068:˙ 1017:˙ 966:∂ 958:∂ 937:˙ 889:˙ 859:∑ 840:∂ 832:∂ 809:˙ 784:˙ 774:∂ 766:∂ 731:∂ 723:∂ 695:∑ 640:), where 582:∂ 574:∂ 556:˙ 513:˙ 503:∂ 495:∂ 422:≡ 410:˙ 382:∂ 374:∂ 353:˙ 343:∂ 335:∂ 4105:Momentum 3824:See also 3806:aliasing 3735:particle 3731:electron 3701:spectrum 2517:integral 2280:(i.e. a 2058:′ 2014:′ 1935:′ 1882:′ 1741:′ 1691:′ 1620:′ 1572:′ 1529:′ 665:) is an 293:) is an 268:, where 264:) is in 222:momentum 112:function 34:geometry 3729:For an 2300:of the 658:, ..., 301:of the 170:k-space 30:physics 4081:  4051:  4028:  3981:  3953:  3926:  3601:-space 3238:-space 2978:-space 2798:. The 2796:domain 2554:-space 2324:length 998:. The 617:also, 305:. The 286:,..., 142:. The 78:length 48:(also 4026:S2CID 4008:arXiv 3776:When 3713:image 2910:. So 2790:(see 2320:space 2290:basis 2288:) of 2284:as a 1514:′ is 299:tuple 140:waves 57:space 4079:ISBN 4049:ISBN 3979:ISBN 3951:ISBN 3924:ISBN 3884:) = 3869:and 3749:and 3687:and 3683:The 3495:and 3312:The 2900:and 2802:are 2294:span 166:time 32:and 4018:doi 3890:vdu 3886:udv 3771:not 2268:In 2104:In 644:= ( 272:= ( 76:of 68:in 52:or 28:In 4101:: 4063:^ 4024:. 4016:. 4004:50 4002:. 3965:^ 3888:+ 3882:uv 3800:= 3124:, 2725:. 2440:: 2124:, 2120:, 2110:or 651:, 636:, 634:dt 625:, 621:′( 279:, 260:, 258:dt 249:, 213:= 202:≥ 184:. 4087:. 4057:. 4032:. 4020:: 4010:: 3987:. 3959:. 3932:. 3893:. 3880:( 3878:d 3872:v 3866:u 3818:k 3814:k 3802:0 3798:k 3790:k 3786:k 3782:k 3778:k 3751:p 3747:k 3739:k 3709:r 3705:p 3689:p 3685:r 3664:. 3660:r 3654:3 3649:d 3641:r 3633:k 3629:i 3622:e 3618:) 3614:r 3610:( 3596:r 3582:3 3578:) 3569:2 3564:( 3560:1 3555:= 3552:) 3548:k 3544:( 3521:) 3517:k 3513:( 3500:r 3480:r 3472:k 3468:i 3461:e 3453:3 3448:) 3440:2 3435:( 3430:1 3425:= 3422:) 3418:k 3414:( 3408:r 3378:k 3365:i 3362:= 3355:p 3339:i 3336:= 3327:r 3298:. 3294:r 3288:3 3283:d 3278:) 3274:k 3270:( 3264:r 3255:) 3251:r 3247:( 3233:r 3224:= 3221:) 3217:k 3213:( 3190:, 3187:) 3183:k 3179:( 3174:j 3164:j 3154:j 3146:= 3143:) 3139:k 3135:( 3112:) 3108:k 3104:( 3099:j 3074:) 3070:k 3066:( 3034:k 3028:3 3023:d 3015:r 3007:k 3003:i 2999:e 2995:) 2991:k 2987:( 2973:k 2959:3 2955:) 2946:2 2941:( 2937:1 2932:= 2929:) 2925:r 2921:( 2908:k 2905:ħ 2885:r 2877:k 2873:i 2869:e 2860:3 2856:) 2847:2 2842:( 2838:1 2833:= 2830:) 2826:r 2822:( 2816:k 2774:r 2758:i 2752:= 2743:p 2703:) 2701:r 2699:( 2697:ψ 2682:) 2678:k 2674:( 2651:) 2647:r 2643:( 2637:k 2610:k 2604:3 2599:d 2594:) 2590:r 2586:( 2580:k 2571:) 2567:k 2563:( 2549:k 2540:= 2537:) 2533:r 2529:( 2503:) 2499:r 2495:( 2490:j 2480:j 2470:j 2462:= 2459:) 2455:r 2451:( 2438:) 2436:r 2434:( 2431:j 2427:ψ 2422:) 2420:r 2418:( 2416:ψ 2360:) 2356:k 2352:( 2332:r 2316:) 2314:r 2312:( 2310:ψ 2243:. 2234:i 2230:q 2221:H 2209:= 2204:i 2194:p 2186:, 2177:i 2173:p 2164:H 2155:= 2150:i 2140:q 2126:t 2122:p 2118:q 2116:( 2114:H 2081:. 2072:i 2068:p 2055:L 2045:= 2037:i 2027:p 2011:L 1998:t 1995:d 1991:d 1967:. 1958:i 1948:p 1932:L 1922:= 1917:i 1913:q 1905:, 1896:i 1892:p 1879:L 1869:= 1864:i 1854:q 1843:, 1839:) 1834:i 1830:p 1824:i 1814:q 1807:+ 1802:i 1792:p 1783:i 1779:q 1775:( 1770:n 1765:1 1762:= 1759:i 1748:L 1745:= 1738:L 1727:L 1723:L 1709:t 1706:d 1700:t 1688:L 1678:+ 1674:) 1668:i 1658:p 1651:d 1643:i 1633:p 1617:L 1607:+ 1602:i 1598:p 1594:d 1586:i 1582:p 1569:L 1558:( 1552:n 1547:1 1544:= 1541:i 1533:= 1526:L 1522:d 1512:L 1496:. 1492:t 1489:d 1483:t 1475:L 1466:+ 1463:) 1458:i 1448:p 1441:d 1436:i 1432:q 1428:+ 1423:i 1419:p 1415:d 1410:i 1400:q 1393:( 1388:n 1383:1 1380:= 1377:i 1366:= 1362:] 1358:) 1353:i 1349:p 1343:i 1333:q 1326:+ 1321:i 1311:p 1302:i 1298:q 1294:( 1289:n 1284:1 1281:= 1278:i 1267:L 1263:[ 1259:d 1237:i 1233:p 1229:d 1224:i 1214:q 1204:) 1199:i 1195:p 1189:i 1179:q 1172:( 1169:d 1166:= 1161:i 1151:q 1144:d 1139:i 1135:p 1113:i 1103:p 1096:d 1091:i 1087:q 1080:) 1075:i 1065:p 1056:i 1052:q 1048:( 1045:d 1042:= 1037:i 1033:q 1029:d 1024:i 1014:p 996:L 982:, 978:t 975:d 969:t 961:L 952:+ 949:) 944:i 934:q 927:d 922:i 918:p 914:+ 909:i 905:q 901:d 896:i 886:p 879:( 874:n 869:1 866:= 863:i 855:= 852:t 849:d 843:t 835:L 826:+ 822:) 816:i 806:q 799:d 791:i 781:q 769:L 760:+ 755:i 751:q 747:d 739:i 735:q 726:L 716:( 710:n 705:1 702:= 699:i 691:= 688:L 685:d 667:n 662:n 660:p 656:2 653:p 649:1 646:p 642:p 638:t 632:/ 630:p 627:d 623:p 619:L 599:. 590:i 586:q 577:L 568:= 563:i 553:p 529:, 520:i 510:q 498:L 489:= 484:i 480:p 453:. 446:t 443:d 436:i 432:q 428:d 417:i 407:q 399:, 390:i 386:q 377:L 368:= 360:i 350:q 338:L 326:t 323:d 319:d 297:- 295:n 290:n 288:q 284:2 281:q 277:1 274:q 270:q 262:t 256:/ 254:q 251:d 247:q 245:( 243:L 218:k 215:ħ 211:p 204:ħ 200:p 198:Δ 196:x 194:Δ 178:k 174:r 162:ω 151:k 147:k 132:p 130:( 128:φ 120:r 118:( 116:f 99:p 66:r 23:.

Index

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
generalized coordinates

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