| electronic state | 58 | 26 | 2.12 | 0.006732 | 1906.06244,1906.04846,etc |
| light field | 40 | 12 | 3.545 | 0.005412 | 1906.05771,1906.09120,etc |
| exceptional point | 57 | 12 | 5.091 | 0.004589 | 1906.00962,1906.03988,etc |
| saddle point | 73 | 17 | 3.0 | 0.004417 | 1906.01580,1906.06077,etc |
| long-range interaction | 34 | 13 | 2.75 | 0.00403 | 1906.08389,1906.11815,etc |
| transition state | 52 | 11 | 5.0 | 0.003772 | 1906.07455,1906.06077,etc |
| shear modulus | 85 | 13 | 6.583 | 0.003518 | 1906.07297,1906.07006,etc |
| contact angle | 56 | 11 | 5.4 | 0.003459 | 1906.11292,1906.02364,etc |
| entangled state | 51 | 11 | 3.2 | 0.003384 | 1906.06244,1906.05770,etc |
| Rydberg state | 46 | 11 | 4.5 | 0.003306 | 1906.05151,1906.10728,etc |
| cosmic ray | 36 | 14 | 2.615 | 0.003283 | 1906.10483,1906.08940,etc |
| reflection coefficient | 66 | 16 | 4.333 | 0.00313 | 1906.11097,1906.09120,etc |
| porous medium | 98 | 19 | 5.389 | 0.003127 | 1906.01632,1906.04722,etc |
| strain field | 35 | 12 | 3.091 | 0.002928 | 1906.07144,1906.07297,etc |
| Maxwell' equation | 75 | 27 | 2.808 | 0.002922 | 1906.05690,1906.05219,etc |
| collision energy | 80 | 11 | 7.7 | 0.002918 | 1906.07455,1906.02693,etc |
| activation function | 129 | 24 | 5.478 | 0.002849 | 1906.01170,1906.08968,etc |
| vortex core | 47 | 11 | 4.1 | 0.002846 | 1906.06391,1906.09660,etc |
| inertial range | 56 | 14 | 3.462 | 0.00283 | 1906.07144,1906.11830,etc |
| cryogenic temperature | 52 | 14 | 3.923 | 0.002792 | 1906.09311,1906.09743,etc |
| shock wave | 79 | 12 | 6.455 | 0.002754 | 1906.11637,1906.06604,etc |
| acoustic wave | 43 | 14 | 3.077 | 0.002749 | 1906.11637,1906.07297,etc |
| domain size | 40 | 16 | 2.6 | 0.002744 | 1906.00677,1906.04757,etc |
| band gap | 102 | 24 | 4.174 | 0.002734 | 1906.00962,1906.09057,etc |
| drag coefficient | 84 | 21 | 2.5 | 0.00262 | 1906.01813,1906.06604,etc |
| laser pulse | 148 | 39 | 3.868 | 0.002593 | 1906.06244,1906.01903,etc |
| ground state | 349 | 93 | 3.685 | 0.002576 | 1906.06244,1906.01855,etc |
| community structure | 78 | 15 | 5.5 | 0.00255 | 1906.00926,1906.06671,etc |
| electron beam | 127 | 23 | 5.727 | 0.002547 | 1906.03358,1906.05481,etc |
| external electric field | 42 | 11 | 2.8 | 0.002504 | 1906.00047,1906.03862,etc |
| nonlinear system | 32 | 15 | 2.214 | 0.002502 | 1906.01632,1906.11637,etc |
| system size | 95 | 33 | 2.812 | 0.002477 | 1906.08822,1906.10503,etc |
| grid point | 114 | 37 | 3.139 | 0.002474 | 1906.00203,1906.11637,etc |
| magnetic field | 825 | 159 | 5.215 | 0.002407 | 1906.02317,1906.03358,etc |
| Brownian motion | 39 | 11 | 3.8 | 0.002339 | 1906.02527,1906.00608,etc |
| external magnetic field | 105 | 34 | 2.818 | 0.002332 | 1906.05770,1906.04846,etc |
| photon number | 47 | 16 | 2.667 | 0.002293 | 1906.05771,1906.11019,etc |
| solid surface | 39 | 16 | 2.133 | 0.002288 | 1906.04685,1906.05060,etc |
| orbital angular momentum | 58 | 27 | 2.192 | 0.002249 | 1906.01855,1906.05770,etc |
| momentum distribution | 39 | 11 | 3.8 | 0.00224 | 1906.11060,1906.10429,etc |
| film thickness | 83 | 18 | 4.588 | 0.002213 | 1906.04685,1906.03357,etc |
| energy barrier | 63 | 16 | 4.067 | 0.002209 | 1906.06077,1906.02419,etc |
| normal distribution | 56 | 25 | 2.25 | 0.002184 | 1906.10098,1906.03667,etc |
| energy spectrum | 100 | 36 | 2.829 | 0.002174 | 1906.00203,1906.01944,etc |
| cavity mode | 64 | 19 | 3.5 | 0.002174 | 1906.10754,1906.11019,etc |
| effective mass | 61 | 17 | 3.75 | 0.002106 | 1906.11097,1906.08352,etc |
| Reynolds number | 204 | 49 | 4.229 | 0.002098 | 1906.01813,1906.00886,etc |
| continuum model | 44 | 13 | 3.583 | 0.002055 | 1906.07006,1906.02441,etc |
| critical point | 106 | 30 | 3.483 | 0.002045 | 1906.03189,1906.01580,etc |
| neural network | 228 | 57 | 4.036 | 0.002043 | 1906.01170,1906.12030,etc |
| energy resolution | 111 | 21 | 5.3 | 0.002039 | 1906.09608,1906.00713,etc |
| Mach number | 83 | 18 | 4.588 | 0.002033 | 1906.06604,1906.06466,etc |
| growth rate | 223 | 45 | 5.0 | 0.002021 | 1906.11292,1906.11637,etc |
| valence electron | 42 | 16 | 2.733 | 0.00202 | 1906.04653,1906.08465,etc |
| quantum system | 74 | 31 | 2.267 | 0.002004 | 1906.06244,1906.01855,etc |
| laser power | 82 | 23 | 3.318 | 0.002004 | 1906.09265,1906.01903,etc |
| transmission coefficient | 65 | 17 | 4.0 | 0.001995 | 1906.10754,1906.05690,etc |
| phase velocity | 83 | 22 | 3.857 | 0.001994 | 1906.02317,1906.11060,etc |
| optical axis | 67 | 16 | 4.133 | 0.001988 | 1906.05771,1906.07167,etc |
| stochastic differential equation | 24 | 12 | 2.091 | 0.001982 | 1906.09265,1906.09492,etc |
| friction coefficient | 66 | 13 | 5.417 | 0.001956 | 1906.11292,1906.05818,etc |
| water molecule | 46 | 12 | 4.0 | 0.001951 | 1906.10033,1906.05788,etc |
| dissipation rate | 52 | 13 | 4.25 | 0.00193 | 1906.10754,1906.07144,etc |
| thermal conductivity | 85 | 17 | 4.688 | 0.001925 | 1906.05322,1906.09743,etc |
| pulse energy | 58 | 16 | 3.8 | 0.001895 | 1906.03358,1906.07831,etc |
| resonant frequency | 42 | 20 | 2.105 | 0.001886 | 1906.05690,1906.01387,etc |
| bias voltage | 49 | 13 | 3.667 | 0.001886 | 1906.00519,1906.05481,etc |
| decay rate | 89 | 36 | 2.514 | 0.001864 | 1906.02317,1906.10754,etc |
| external field | 88 | 31 | 2.667 | 0.001862 | 1906.06244,1906.02317,etc |
| distribution function | 128 | 32 | 4.097 | 0.001858 | 1906.01813,1906.04722,etc |
| Gaussian beam | 59 | 19 | 3.111 | 0.001833 | 1906.09265,1906.08984,etc |
| dispersion relation | 174 | 50 | 3.224 | 0.001825 | 1906.04867,1906.08389,etc |
| correlation function | 91 | 27 | 3.462 | 0.001823 | 1906.06450,1906.05818,etc |
| Green' function | 127 | 25 | 5.25 | 0.001818 | 1906.10098,1906.01580,etc |
| electric field | 517 | 131 | 3.962 | 0.001817 | 1906.11097,1906.10754,etc |
| active region | 33 | 11 | 3.1 | 0.001808 | 1906.02317,1906.03189,etc |
| metastable state | 34 | 11 | 3.2 | 0.001807 | 1906.02419,1906.04890,etc |
| output signal | 44 | 16 | 2.867 | 0.00177 | 1906.06559,1906.03227,etc |
| dynamical system | 117 | 44 | 2.698 | 0.001756 | 1906.01170,1906.03066,etc |
| Fermi level | 56 | 16 | 3.133 | 0.001734 | 1906.10062,1906.09608,etc |
| heat transfer | 35 | 15 | 2.429 | 0.001732 | 1906.08066,1906.09743,etc |
| Rabi frequency | 54 | 16 | 3.467 | 0.001717 | 1906.01855,1906.05771,etc |
| plane wave | 121 | 53 | 2.308 | 0.001709 | 1906.05690,1906.01669,etc |
| free energy | 139 | 38 | 3.73 | 0.001691 | 1906.03189,1906.08822,etc |
| interaction region | 78 | 16 | 3.733 | 0.001676 | 1906.05151,1906.07059,etc |
| social network | 99 | 28 | 3.63 | 0.001673 | 1906.00926,1906.08946,etc |
| kernel function | 31 | 11 | 2.8 | 0.001667 | 1906.09492,1906.00464,etc |
| Newtonian fluid | 27 | 11 | 2.5 | 0.001664 | 1906.07144,1906.03376,etc |
| wave packet | 43 | 18 | 2.471 | 0.00164 | 1906.02317,1906.00962,etc |
| electron density | 83 | 31 | 2.7 | 0.001636 | 1906.11060,1906.00822,etc |
| dielectric function | 37 | 13 | 2.083 | 0.001635 | 1906.00822,1906.10593,etc |
| solar wind | 72 | 18 | 4.176 | 0.001631 | 1906.03189,1906.05644,etc |
| inverse problem | 84 | 17 | 5.188 | 0.001631 | 1906.01413,1906.01170,etc |
| phase diagram | 123 | 37 | 3.361 | 0.001628 | 1906.05624,1906.04867,etc |
| flow field | 112 | 38 | 3.0 | 0.001619 | 1906.01632,1906.06466,etc |
| refractive index | 156 | 63 | 2.5 | 0.001614 | 1906.07776,1906.05219,etc |
| analytical model | 38 | 19 | 2.056 | 0.001607 | 1906.09265,1906.05644,etc |
| continuity equation | 71 | 28 | 2.407 | 0.001605 | 1906.03107,1906.09352,etc |
| vector field | 74 | 19 | 4.056 | 0.001588 | 1906.00689,1906.03977,etc |
| phase transition | 110 | 50 | 2.061 | 0.001577 | 1906.00962,1906.05624,etc |
|