| basis function | 102 | 34 | 3.0 | 0.008424 | 1804.02764,1804.00123,etc |
| survival probability | 30 | 15 | 2.071 | 0.004045 | 1804.04374,1804.08693,etc |
| optical lattice | 78 | 18 | 4.529 | 0.003647 | 1804.01663,1804.00837,etc |
| stationary solution | 29 | 14 | 2.077 | 0.003556 | 1804.02629,1804.06607,etc |
| neural network | 79 | 16 | 5.133 | 0.003152 | 1804.01151,1804.09641,etc |
| energy resolution | 58 | 18 | 3.353 | 0.003048 | 1804.09641,1804.00653,etc |
| relative phase | 58 | 21 | 2.7 | 0.002988 | 1804.01518,1804.10357,etc |
| spatial mode | 54 | 11 | 5.3 | 0.002905 | 1804.01518,1804.02623,etc |
| unstable mode | 40 | 13 | 3.167 | 0.002889 | 1804.04429,1804.02122,etc |
| free surface | 107 | 18 | 5.529 | 0.002883 | 1804.06329,1804.09491,etc |
| thermodynamic limit | 81 | 20 | 4.211 | 0.002688 | 1804.02122,1804.08257,etc |
| objective function | 118 | 24 | 5.087 | 0.002537 | 1804.03859,1804.02346,etc |
| light field | 41 | 15 | 2.857 | 0.002533 | 1804.01518,1804.00121,etc |
| laser beam | 120 | 35 | 3.5 | 0.002513 | 1804.01518,1804.01160,etc |
| second law | 48 | 12 | 4.273 | 0.002483 | 1804.02122,1804.06738,etc |
| proton beam | 44 | 14 | 3.308 | 0.002449 | 1804.10744,1804.08961,etc |
| diffusion process | 60 | 13 | 4.833 | 0.0024 | 1804.09483,1804.07743,etc |
| band gap | 85 | 26 | 2.24 | 0.002355 | 1804.06681,1804.04676,etc |
| grid cell | 58 | 13 | 4.75 | 0.002344 | 1804.09326,1804.03479,etc |
| external magnetic field | 51 | 23 | 2.273 | 0.002262 | 1804.04429,1804.07263,etc |
| symmetry axis | 33 | 14 | 2.308 | 0.002258 | 1804.01518,1804.01006,etc |
| thermal fluctuation | 63 | 23 | 2.773 | 0.002244 | 1804.09994,1804.06793,etc |
| community structure | 113 | 15 | 6.929 | 0.002167 | 1804.09820,1804.06005,etc |
| unit cell | 109 | 31 | 3.433 | 0.002139 | 1804.04676,1804.00837,etc |
| time window | 77 | 22 | 3.619 | 0.002124 | 1804.06957,1804.07195,etc |
| edge state | 61 | 15 | 4.286 | 0.002122 | 1804.04676,1804.00837,etc |
| radial distribution function | 22 | 11 | 2.1 | 0.002117 | 1804.06957,1804.01151,etc |
| inertial range | 59 | 15 | 3.857 | 0.002018 | 1804.09200,1804.00547,etc |
| quantum mechanic | 189 | 51 | 3.76 | 0.001971 | 1804.06681,1804.01151,etc |
| classical mechanic | 51 | 17 | 2.375 | 0.001838 | 1804.02122,1804.08399,etc |
| vertical velocity | 51 | 11 | 5.0 | 0.00182 | 1804.09326,1804.02649,etc |
| flow field | 103 | 38 | 2.676 | 0.0018 | 1804.02212,1804.06047,etc |
| electron dynamic | 48 | 17 | 2.938 | 0.001794 | 1804.04497,1804.02095,etc |
| asymptotic regime | 35 | 11 | 3.4 | 0.001786 | 1804.04865,1804.03095,etc |
| plasma density | 70 | 24 | 2.609 | 0.001753 | 1804.10357,1804.10966,etc |
| laser pulse | 116 | 37 | 3.0 | 0.001736 | 1804.04429,1804.08257,etc |
| normal component | 33 | 14 | 2.462 | 0.001697 | 1804.09491,1804.02212,etc |
| stochastic differential equation | 31 | 11 | 3.0 | 0.001692 | 1804.08913,1804.00183,etc |
| porous medium | 51 | 12 | 4.182 | 0.001692 | 1804.03914,1804.01129,etc |
| two-level system | 32 | 12 | 2.727 | 0.001685 | 1804.01663,1804.00915,etc |
| density gradient | 41 | 13 | 2.667 | 0.001679 | 1804.09001,1804.02642,etc |
| dielectric function | 50 | 14 | 3.769 | 0.001676 | 1804.06478,1804.00915,etc |
| classical electrodynamics | 45 | 12 | 4.0 | 0.001664 | 1804.09022,1804.01160,etc |
| lattice site | 68 | 19 | 3.611 | 0.00166 | 1804.00579,1804.09732,etc |
| electric field | 524 | 159 | 3.304 | 0.001655 | 1804.01279,1804.10700,etc |
| correlation time | 30 | 11 | 2.5 | 0.001649 | 1804.08913,1804.04099,etc |
| thin film | 52 | 15 | 3.357 | 0.001644 | 1804.00909,1804.03962,etc |
| complex network | 90 | 32 | 2.871 | 0.00161 | 1804.07476,1804.06005,etc |
| ion beam | 38 | 12 | 3.364 | 0.00159 | 1804.00233,1804.06145,etc |
| optical fiber | 36 | 17 | 2.062 | 0.001546 | 1804.08975,1804.00172,etc |
| energy barrier | 35 | 12 | 3.091 | 0.00151 | 1804.04374,1804.07135,etc |
| pressure field | 31 | 15 | 2.143 | 0.001499 | 1804.03859,1804.00999,etc |
| count rate | 26 | 11 | 2.5 | 0.001481 | 1804.05234,1804.01518,etc |
| gas phase | 40 | 15 | 2.786 | 0.001481 | 1804.06329,1804.09491,etc |
| room temperature | 140 | 66 | 2.138 | 0.001475 | 1804.04374,1804.06895,etc |
| central frequency | 34 | 12 | 3.0 | 0.001474 | 1804.01279,1804.01131,etc |
| modulation frequency | 39 | 12 | 2.909 | 0.001467 | 1804.03345,1804.05642,etc |
| analytical solution | 99 | 47 | 2.13 | 0.001432 | 1804.01663,1804.02212,etc |
| surface tension | 100 | 29 | 3.429 | 0.001397 | 1804.06329,1804.06307,etc |
| Fokker-Planck equation | 35 | 13 | 2.833 | 0.001394 | 1804.09200,1804.07743,etc |
| drag force | 39 | 14 | 2.923 | 0.001387 | 1804.06957,1804.02778,etc |
| boundary condition | 522 | 152 | 3.45 | 0.001383 | 1804.06681,1804.06329,etc |
| Green' function | 63 | 20 | 2.526 | 0.001378 | 1804.08257,1804.08693,etc |
| temperature dependence | 47 | 23 | 2.091 | 0.001372 | 1804.06895,1804.11322,etc |
| asymptotic behavior | 41 | 15 | 2.857 | 0.00135 | 1804.09995,1804.07489,etc |
| structural property | 37 | 13 | 3.0 | 0.001344 | 1804.10605,1804.01844,etc |
| inflection point | 37 | 16 | 2.067 | 0.001327 | 1804.02346,1804.09001,etc |
| convergence rate | 37 | 12 | 3.182 | 0.001311 | 1804.08593,1804.01184,etc |
| training datum | 68 | 16 | 4.4 | 0.001298 | 1804.07195,1804.09641,etc |
| physical space | 51 | 21 | 2.4 | 0.001267 | 1804.09820,1804.09491,etc |
| continuous time | 35 | 11 | 3.4 | 0.001257 | 1804.06738,1804.09916,etc |
| electron correlation | 32 | 11 | 3.0 | 0.001256 | 1804.09001,1804.00475,etc |
| constitutive relation | 64 | 16 | 4.2 | 0.001241 | 1804.00509,1804.07597,etc |
| imaging system | 23 | 11 | 2.2 | 0.001236 | 1804.01721,1804.01270,etc |
| experimental datum | 308 | 107 | 2.877 | 0.001235 | 1804.05234,1804.01279,etc |
| resonance frequency | 60 | 28 | 2.037 | 0.001234 | 1804.00909,1804.03345,etc |
| linear regime | 35 | 15 | 2.429 | 0.00116 | 1804.04429,1804.05071,etc |
| particle physics | 41 | 18 | 2.294 | 0.001155 | 1804.10700,1804.00653,etc |
| volume fraction | 75 | 14 | 5.692 | 0.001119 | 1804.09491,1804.00547,etc |
| matrix element | 117 | 50 | 2.347 | 0.001105 | 1804.10700,1804.01030,etc |
| social network | 109 | 31 | 3.567 | 0.001105 | 1804.09427,1804.10605,etc |
| Reynolds number | 180 | 53 | 3.442 | 0.00109 | 1804.03859,1804.02346,etc |
| dipole-dipole interaction | 33 | 11 | 3.2 | 0.001085 | 1804.07135,1804.01030,etc |
| quantum theory | 42 | 14 | 3.154 | 0.001084 | 1804.10700,1804.03606,etc |
| null hypothesis | 36 | 14 | 2.692 | 0.001082 | 1804.00063,1804.03417,etc |
| vacuum chamber | 48 | 17 | 2.25 | 0.00108 | 1804.01518,1804.03553,etc |
| free space | 97 | 37 | 2.667 | 0.001069 | 1804.06478,1804.09117,etc |
| pressure gradient | 45 | 22 | 2.095 | 0.001064 | 1804.06329,1804.04865,etc |
| degree distribution | 75 | 17 | 4.438 | 0.001047 | 1804.07476,1804.01507,etc |
| symmetric case | 35 | 16 | 2.2 | 0.001031 | 1804.06681,1804.04429,etc |
| quantum field theory | 37 | 16 | 2.333 | 0.001031 | 1804.09200,1804.09553,etc |
| potential energy surface | 31 | 14 | 2.308 | 0.001023 | 1804.01151,1804.01161,etc |
| probability measure | 41 | 12 | 3.636 | 0.001008 | 1804.03634,1804.07507,etc |
| friction coefficient | 24 | 11 | 2.3 | 0.001004 | 1804.05571,1804.03930,etc |
| delta function | 42 | 20 | 2.158 | 0.000993 | 1804.06681,1804.04099,etc |
| Figure b | 48 | 20 | 2.421 | 0.000983 | 1804.02764,1804.01151,etc |
| normal incidence | 54 | 19 | 2.833 | 0.000976 | 1804.00999,1804.02230,etc |
| cryogenic temperature | 40 | 19 | 2.167 | 0.000969 | 1804.06895,1804.00233,etc |
| triplet state | 38 | 11 | 3.7 | 0.00094 | 1804.06895,1804.01008,etc |
| photon emission | 33 | 13 | 2.667 | 0.000937 | 1804.08257,1804.10596,etc |
|