| electric field | 979 | 287 | 2.429 | 0.002026 | 0401145,0401086,etc |
| boundary condition | 675 | 216 | 3.357 | 0.001582 | 0401159,0401086,etc |
| matrix element | 832 | 137 | 5.25 | 0.00274 | 0401142,0401008,etc |
| imaginary part | 240 | 109 | 2.667 | 0.000843 | 0401097,0401144,etc |
| laser beam | 294 | 106 | 2.6 | 0.001476 | 0401075,0401019,etc |
| quantum mechanic | 338 | 100 | 2.167 | 0.001944 | 0401142,0401153,etc |
| experimental value | 161 | 74 | 2.167 | 0.001086 | 0401088,0401153,etc |
| real part | 161 | 72 | 2.333 | 0.001193 | 0401144,0401072,etc |
| Maxwell' equation | 180 | 63 | 6.0 | 0.001582 | 0401067,0401083,etc |
| quantum number | 194 | 63 | 2.2 | 0.000884 | 0402061,0402109,etc |
| laser pulse | 237 | 61 | 3.2 | 0.002009 | 0401011,0401136,etc |
| laser field | 180 | 54 | 6.75 | 0.002028 | 0402017,0402107,etc |
| present calculation | 106 | 53 | 2.286 | 0.000881 | 0401157,0401158,etc |
| power law | 176 | 53 | 3.714 | 0.001201 | 0404012,0404048,etc |
| laser intensity | 110 | 51 | 2.5 | 0.001 | 0401075,0401138,etc |
| laser frequency | 97 | 47 | 3.0 | 0.001041 | 0402071,0402128,etc |
| classical mechanic | 138 | 44 | 4.0 | 0.000722 | 0401070,0401112,etc |
| photon energy | 130 | 39 | 2.667 | 0.000995 | 0401136,0401072,etc |
| general expression | 60 | 36 | 2.333 | 0.000474 | 0401086,0401072,etc |
| basis function | 84 | 35 | 4.0 | 0.000622 | 0403121,0403134,etc |
| Appendix A | 74 | 35 | 2.5 | 0.000502 | 0403005,0403105,etc |
| periodic boundary condition | 58 | 34 | 3.333 | 0.000798 | 0401133,0401096,etc |
| previous paper | 50 | 33 | 2.333 | 0.000776 | 0402061,0402127,etc |
| necessary condition | 53 | 31 | 3.25 | 0.000425 | 0401097,0401119,etc |
| theoretical result | 58 | 29 | 2.75 | 0.00083 | 0401153,0401125,etc |
| Reynolds number | 103 | 29 | 3.0 | 0.00133 | 0402015,0402125,etc |
| Dirac equation | 93 | 28 | 4.25 | 0.001231 | 0402061,0402118,etc |
| signal-to-noise ratio | 57 | 28 | 4.0 | 0.000937 | 0403041,0403143,etc |
| ordinary differential equation | 50 | 27 | 2.5 | 0.000508 | 0404036,0404124,etc |
| electronic structure | 62 | 26 | 5.0 | 0.00103 | 0402086,0402109,etc |
| triplet state | 65 | 25 | 4.0 | 0.00146 | 0401113,0401125,etc |
| photonic crystal | 119 | 25 | 10.0 | 0.002436 | 0401008,0401116,etc |
| valence electron | 78 | 25 | 6.0 | 0.0012 | 0403134,0403009,etc |
| vibrational level | 115 | 25 | 11.5 | 0.001026 | 0404028,0404026,etc |
| flow field | 61 | 24 | 5.0 | 0.000893 | 0401056,0401093,etc |
| complex plane | 42 | 24 | 2.333 | 0.000687 | 0405153,0405051,etc |
| unit cell | 58 | 23 | 4.5 | 0.001109 | 0401008,0401108,etc |
| cold atom | 63 | 23 | 3.0 | 0.001044 | 0404012,0404028,etc |
| fluid velocity | 68 | 22 | 3.0 | 0.001104 | 0403104,0403022,etc |
| nonumber && | 54 | 22 | 4.0 | 0.000477 | 0405084,0405023,etc |
| dimensionless parameter | 40 | 22 | 3.0 | 0.000245 | 0405052,0405155,etc |
| momentum space | 57 | 21 | 4.0 | 0.000997 | 0401142,0401113,etc |
| eigenvalue problem | 35 | 21 | 2.5 | 0.000576 | 0401157,0401108,etc |
| ground state energy | 49 | 21 | 3.0 | 0.001236 | 0402109,0402066,etc |
| energy resolution | 65 | 21 | 4.0 | 0.001252 | 0403030,0403136,etc |
| small parameter | 36 | 21 | 6.0 | 0.000262 | 0405052,0405045,etc |
| Appendix B | 39 | 21 | 2.5 | 0.0002 | 0405003,0405156,etc |
| field theory | 55 | 20 | 11.0 | 0.000693 | 0401142,0401070,etc |
| laboratory frame | 59 | 20 | 2.5 | 0.000819 | 0401159,0401075,etc |
| practical application | 27 | 20 | 2.333 | 0.000485 | 0402079,0402062,etc |
| dynamical equation | 37 | 20 | 2.667 | 0.00046 | 0403085,0403129,etc |
| transition amplitude | 45 | 20 | 3.0 | 0.00046 | 0405093,0405043,etc |
| initial velocity | 41 | 19 | 4.0 | 0.0008 | 0401065,0401055,etc |
| other particle | 41 | 19 | 2.333 | 0.000846 | 0402038,0402004,etc |
| linear approximation | 33 | 19 | 2.667 | 0.000442 | 0405123,0405142,etc |
| New York | 31 | 18 | 3.0 | 0.000981 | 0401102,0401093,etc |
| energy flow | 38 | 18 | 2.667 | 0.001327 | 0402118,0402087,etc |
| long wavelength | 32 | 18 | 2.25 | 0.000376 | 0402049,0402055,etc |
| maxwell' equation | 32 | 18 | 2.5 | 0.000856 | 0403042,0403058,etc |
| vacuum chamber | 33 | 18 | 2.5 | 0.000654 | 0404075,0404142,etc |
| incident light | 62 | 17 | 2.667 | 0.000815 | 0401025,0401024,etc |
| momentum transfer | 42 | 17 | 3.0 | 0.000703 | 0401088,0401125,etc |
| particle physics | 35 | 17 | 3.0 | 0.000455 | 0401142,0401062,etc |
| quantum system | 54 | 17 | 3.5 | 0.001755 | 0402068,0402109,etc |
| optical frequency | 46 | 17 | 3.0 | 0.001038 | 0402132,0402073,etc |
| field amplitude | 32 | 17 | 3.5 | 0.000818 | 0407155,0407087,etc |
| numerical example | 27 | 16 | 2.5 | 0.000684 | 0401097,0401137,etc |
| rate equation | 33 | 16 | 4.0 | 0.000788 | 0401075,0401074,etc |
| exact result | 35 | 16 | 16.0 | 0.000451 | 0403146,0403072,etc |
| noise ratio | 28 | 16 | 2.333 | 0.000448 | 0403041,0403091,etc |
| present experiment | 30 | 16 | 2.5 | 0.000474 | 0404069,0404026,etc |
| surface tension | 56 | 16 | 3.0 | 0.001928 | 0404088,0404086,etc |
| correlation time | 36 | 16 | 4.0 | 0.000607 | 0406029,0406084,etc |
| particle density | 33 | 16 | 6.5 | 0.000627 | 0406061,0406011,etc |
| electron energy | 32 | 15 | 5.0 | 0.000696 | 0401157,0401158,etc |
| asymptotic value | 24 | 15 | 3.0 | 0.000512 | 0401145,0401018,etc |
| short pulse | 35 | 15 | 2.667 | 0.000241 | 0402071,0402108,etc |
| high intensity | 27 | 15 | 2.25 | 0.000355 | 0402107,0402113,etc |
| dusty plasma | 58 | 15 | 3.0 | 0.001712 | 0402049,0402050,etc |
| system size | 28 | 15 | 2.5 | 0.000463 | 0403047,0403146,etc |
| energy-momentum tensor | 42 | 15 | 8.5 | 0.000441 | 0404084,0404103,etc |
| Poynting vector | 28 | 15 | 4.0 | 0.000746 | 0404139,0404101,etc |
| nonlinear term | 25 | 15 | 3.5 | 0.000624 | 0404118,0404108,etc |
| second part | 19 | 15 | 3.0 | 0.000296 | 0404053,0404026,etc |
| cylindrical symmetry | 36 | 15 | 3.0 | 0.001018 | 0404005,0404110,etc |
| open shell | 60 | 15 | 4.583 | 0.001314 | 0405129,0405072,etc |
| classical electrodynamics | 40 | 15 | 4.0 | 0.000725 | 0405143,0405050,etc |
| statistical mechanic | 41 | 14 | 9.0 | 0.000826 | 0401056,0401036,etc |
| quantum field theory | 39 | 14 | 7.0 | 0.001021 | 0401142,0401070,etc |
| arbitrary number | 28 | 14 | 3.0 | 0.000584 | 0401008,0401070,etc |
| molecular ion | 64 | 14 | 5.0 | 0.002107 | 0402107,0402108,etc |
| relativistic case | 32 | 14 | 7.0 | 0.000583 | 0402061,0402128,etc |
| dynamical variable | 32 | 14 | 7.0 | 0.000597 | 0403121,0403035,etc |
| paraxial approximation | 42 | 14 | 2.25 | 0.000343 | 0406134,0406131,etc |
| large amplitude | 22 | 14 | 4.0 | 0.000542 | 0406086,0406145,etc |
| eigenvalue equation | 32 | 13 | 3.5 | 0.001182 | 0401119,0401137,etc |
| physical interpretation | 27 | 13 | 3.0 | 0.000402 | 0401119,0401083,etc |
| bond length | 53 | 13 | 7.75 | 0.001023 | 0402107,0402086,etc |
| sum rule | 83 | 13 | 7.0 | 0.00113 | 0402061,0402083,etc |
| different scale | 28 | 13 | 3.0 | 0.001421 | 0402028,0402104,etc |
|