| correlation length | 48 | 12 | 4.091 | 0.005998 | 1902.06697,1902.05874,etc |
| conservation law | 50 | 17 | 3.0 | 0.004291 | 1902.08311,1902.00079,etc |
| degree distribution | 82 | 14 | 6.231 | 0.003812 | 1902.03435,1902.07347,etc |
| free energy | 163 | 32 | 5.194 | 0.003399 | 1902.08883,1902.05780,etc |
| interaction region | 57 | 14 | 4.308 | 0.003225 | 1902.10137,1902.04656,etc |
| free surface | 92 | 15 | 6.071 | 0.003194 | 1902.04034,1902.03446,etc |
| microfluidic device | 26 | 11 | 2.4 | 0.003047 | 1902.05448,1902.09389,etc |
| power spectrum | 74 | 23 | 3.318 | 0.003004 | 1902.01221,1902.07694,etc |
| reaction rate | 52 | 14 | 3.923 | 0.002908 | 1902.08408,1902.08854,etc |
| Green' function | 95 | 17 | 5.875 | 0.002874 | 1902.03342,1902.07135,etc |
| electron beam | 137 | 33 | 4.25 | 0.00283 | 1902.06431,1902.00260,etc |
| energy transfer | 120 | 35 | 3.5 | 0.0028 | 1902.05598,1902.04500,etc |
| heat flux | 135 | 25 | 5.583 | 0.002772 | 1902.10594,1902.10392,etc |
| unit cell | 118 | 29 | 3.964 | 0.002755 | 1902.04500,1902.06697,etc |
| pressure drop | 67 | 12 | 5.545 | 0.002738 | 1902.07577,1902.03447,etc |
| plasma density | 69 | 18 | 3.941 | 0.002723 | 1902.09281,1902.04771,etc |
| frequency comb | 40 | 12 | 2.545 | 0.002699 | 1902.03654,1902.04536,etc |
| linear polarization | 38 | 13 | 3.083 | 0.002696 | 1902.04284,1902.05257,etc |
| Markov chain | 39 | 11 | 3.8 | 0.002541 | 1902.00686,1902.06069,etc |
| external force | 74 | 21 | 3.35 | 0.002531 | 1902.06721,1902.09328,etc |
| quantum emitter | 34 | 14 | 2.538 | 0.002524 | 1902.08433,1902.10855,etc |
| dark state | 50 | 12 | 4.455 | 0.002524 | 1902.05628,1902.04284,etc |
| water molecule | 56 | 22 | 2.524 | 0.002509 | 1902.08408,1902.04468,etc |
| friction coefficient | 56 | 11 | 5.4 | 0.002501 | 1902.06207,1902.04410,etc |
| Langevin equation | 57 | 13 | 4.667 | 0.002497 | 1902.10598,1902.03198,etc |
| energy gap | 44 | 16 | 2.867 | 0.002496 | 1902.06397,1902.02828,etc |
| solar wind | 267 | 26 | 9.84 | 0.002432 | 1902.07652,1902.02038,etc |
| resonance frequency | 66 | 27 | 2.5 | 0.00241 | 1902.06697,1902.02001,etc |
| spot size | 30 | 14 | 2.231 | 0.002381 | 1902.08433,1902.05628,etc |
| optical mode | 43 | 13 | 3.5 | 0.00235 | 1902.07350,1902.00670,etc |
| magnetic field | 784 | 160 | 4.925 | 0.002348 | 1902.04928,1902.05628,etc |
| laser pulse | 142 | 39 | 3.684 | 0.002331 | 1902.10137,1902.09007,etc |
| band gap | 68 | 17 | 4.188 | 0.002327 | 1902.10392,1902.04001,etc |
| energy flux | 58 | 21 | 2.8 | 0.002292 | 1902.10594,1902.04669,etc |
| single molecule | 33 | 14 | 2.462 | 0.002259 | 1902.05628,1902.08408,etc |
| conduction band | 41 | 14 | 2.923 | 0.002214 | 1902.06397,1902.02521,etc |
| electric field | 499 | 143 | 3.486 | 0.002181 | 1902.05036,1902.05448,etc |
| Gaussian beam | 46 | 17 | 2.812 | 0.002163 | 1902.09281,1902.09974,etc |
| edge state | 76 | 11 | 7.5 | 0.002147 | 1902.04001,1902.06697,etc |
| heating rate | 57 | 11 | 5.6 | 0.002143 | 1902.00370,1902.01216,etc |
| Coriolis force | 55 | 17 | 3.312 | 0.002123 | 1902.10594,1902.08523,etc |
| interference pattern | 45 | 12 | 4.0 | 0.002122 | 1902.01694,1902.06564,etc |
| spatial frequency | 30 | 11 | 2.2 | 0.002108 | 1902.00364,1902.01221,etc |
| inertial range | 76 | 20 | 3.632 | 0.002102 | 1902.06666,1902.00079,etc |
| basis function | 142 | 36 | 4.029 | 0.002095 | 1902.09007,1902.03581,etc |
| Rydberg atom | 66 | 11 | 5.8 | 0.002086 | 1902.11063,1902.02989,etc |
| collective behavior | 26 | 11 | 2.4 | 0.002075 | 1902.05307,1902.02989,etc |
| analytical model | 42 | 17 | 2.5 | 0.002064 | 1902.01962,1902.06261,etc |
| critical point | 65 | 26 | 2.56 | 0.001993 | 1902.06665,1902.06697,etc |
| angular distribution | 37 | 16 | 2.4 | 0.001959 | 1902.06974,1902.09593,etc |
| field theory | 42 | 14 | 3.154 | 0.001954 | 1902.07135,1902.04076,etc |
| ambient temperature | 36 | 14 | 2.385 | 0.001948 | 1902.06261,1902.01991,etc |
| valence band | 48 | 12 | 4.273 | 0.001937 | 1902.06397,1902.04120,etc |
| pure state | 79 | 13 | 6.417 | 0.001931 | 1902.04564,1902.04076,etc |
| film thickness | 54 | 13 | 4.417 | 0.001916 | 1902.08733,1902.00351,etc |
| neural network | 115 | 25 | 4.708 | 0.00189 | 1902.08589,1902.03336,etc |
| molecular orbital | 28 | 11 | 2.7 | 0.001888 | 1902.02134,1902.10673,etc |
| metastable state | 40 | 15 | 2.786 | 0.001875 | 1902.03336,1902.05307,etc |
| porous medium | 93 | 18 | 5.059 | 0.001873 | 1902.07577,1902.09899,etc |
| photon energy | 80 | 30 | 2.724 | 0.001868 | 1902.10137,1902.09418,etc |
| pulse duration | 62 | 24 | 2.652 | 0.001868 | 1902.09281,1902.09974,etc |
| laser field | 71 | 23 | 3.136 | 0.001851 | 1902.04928,1902.09281,etc |
| detection efficiency | 41 | 16 | 2.667 | 0.001846 | 1902.08433,1902.03679,etc |
| probability density | 89 | 31 | 2.933 | 0.001836 | 1902.05104,1902.03530,etc |
| energy resolution | 62 | 20 | 3.211 | 0.001795 | 1902.06083,1902.01234,etc |
| binding energy | 74 | 25 | 2.625 | 0.001789 | 1902.07646,1902.02177,etc |
| optical axis | 41 | 15 | 2.786 | 0.001776 | 1902.05036,1902.10392,etc |
| distribution function | 179 | 41 | 4.45 | 0.001773 | 1902.03447,1902.08672,etc |
| linear stability analysis | 33 | 16 | 2.133 | 0.001772 | 1902.04842,1902.08523,etc |
| electron density | 128 | 39 | 3.342 | 0.00174 | 1902.03581,1902.05019,etc |
| wave function | 226 | 53 | 4.288 | 0.001734 | 1902.05104,1902.05459,etc |
| solar corona | 31 | 11 | 2.9 | 0.001727 | 1902.05785,1902.03448,etc |
| focal plane | 38 | 15 | 2.571 | 0.001726 | 1902.09418,1902.02718,etc |
| dipole-dipole interaction | 29 | 11 | 2.3 | 0.001725 | 1902.05628,1902.02989,etc |
| Rabi frequency | 65 | 19 | 3.444 | 0.001717 | 1902.11063,1902.02989,etc |
| social network | 58 | 18 | 3.353 | 0.001712 | 1902.01266,1902.10035,etc |
| Rydberg state | 119 | 16 | 7.133 | 0.001681 | 1902.11063,1902.01087,etc |
| phase shift | 150 | 46 | 3.311 | 0.001679 | 1902.05104,1902.03530,etc |
| quantum mechanic | 140 | 48 | 2.957 | 0.001677 | 1902.00364,1902.04564,etc |
| absorption spectrum | 38 | 15 | 2.429 | 0.001676 | 1902.03090,1902.06444,etc |
| aspect ratio | 91 | 31 | 3.0 | 0.001672 | 1902.00222,1902.04656,etc |
| transmission coefficient | 52 | 15 | 3.643 | 0.001669 | 1902.10392,1902.08703,etc |
| Fermi level | 32 | 13 | 2.5 | 0.001669 | 1902.04906,1902.02828,etc |
| effective Hamiltonian | 36 | 17 | 2.188 | 0.001667 | 1902.10137,1902.06444,etc |
| repetition rate | 79 | 26 | 2.64 | 0.00166 | 1902.06261,1902.01273,etc |
| focal length | 53 | 23 | 2.318 | 0.001656 | 1902.10472,1902.09418,etc |
| Reynolds number | 190 | 60 | 3.203 | 0.001648 | 1902.04602,1902.05448,etc |
| normal mode | 83 | 17 | 5.062 | 0.001642 | 1902.04842,1902.07694,etc |
| Maxwell' equation | 88 | 32 | 2.806 | 0.001634 | 1902.05782,1902.08703,etc |
| particle density | 39 | 15 | 2.714 | 0.001627 | 1902.08470,1902.05787,etc |
| beam energy | 52 | 14 | 3.769 | 0.001624 | 1902.06083,1902.00260,etc |
| band structure | 51 | 19 | 2.667 | 0.001614 | 1902.04001,1902.06397,etc |
| growth rate | 185 | 51 | 3.68 | 0.001613 | 1902.04602,1902.10594,etc |
| cavity mode | 68 | 18 | 3.882 | 0.001599 | 1902.01282,1902.08509,etc |
| output power | 31 | 11 | 3.0 | 0.001596 | 1902.09821,1902.10392,etc |
| atomic ensemble | 39 | 11 | 3.8 | 0.001589 | 1902.02989,1902.05337,etc |
| time-reversal symmetry | 31 | 13 | 2.5 | 0.001582 | 1902.05628,1902.04001,etc |
| time step | 305 | 108 | 2.841 | 0.001547 | 1902.06665,1902.02879,etc |
| time delay | 70 | 26 | 2.76 | 0.001541 | 1902.07652,1902.05598,etc |
| nonlinear term | 64 | 29 | 2.179 | 0.001525 | 1902.08523,1902.06559,etc |
|