| spacetime curvature | 34 | 17 | 2.062 | 0.005442 | 1801.05830,1801.03208,etc |
| local Lorentz transformation | 34 | 12 | 3.0 | 0.004742 | 1801.03178,1801.05786,etc |
| massive scalar field | 44 | 16 | 2.867 | 0.004108 | 1801.02582,1801.02026,etc |
| extra dimension | 59 | 12 | 5.091 | 0.003728 | 1801.03208,1801.08402,etc |
| null hypersurface | 41 | 11 | 4.0 | 0.003659 | 1801.07064,1801.10380,etc |
| second law | 50 | 15 | 2.714 | 0.003521 | 1801.00650,1801.06149,etc |
| big bang | 61 | 12 | 5.0 | 0.003327 | 1801.08631,1801.02559,etc |
| first law | 62 | 13 | 4.75 | 0.003193 | 1801.02026,1801.07064,etc |
| electric field | 100 | 23 | 4.409 | 0.002985 | 1801.02176,1801.04930,etc |
| new term | 29 | 13 | 2.333 | 0.002691 | 1801.05688,1801.02176,etc |
| momentum space | 48 | 20 | 2.474 | 0.002682 | 1801.04930,1801.02582,etc |
| spatial curvature | 53 | 16 | 3.333 | 0.002545 | 1801.08501,1801.05789,etc |
| Einstein gravity | 84 | 23 | 3.455 | 0.002279 | 1801.08631,1801.10537,etc |
| light ray | 86 | 17 | 4.688 | 0.002222 | 1801.07280,1801.07064,etc |
| background field | 28 | 11 | 2.7 | 0.002212 | 1801.07151,1801.03208,etc |
| black hole solution | 67 | 23 | 2.955 | 0.002195 | 1801.10537,1801.03044,etc |
| curved spacetime | 80 | 32 | 2.548 | 0.002182 | 1801.07280,1801.08501,etc |
| geodesic equation | 82 | 23 | 3.636 | 0.002158 | 1801.08136,1801.06149,etc |
| inflaton field | 62 | 18 | 3.471 | 0.00212 | 1801.07151,1801.08810,etc |
| Sitter spacetime | 47 | 11 | 4.6 | 0.001988 | 1801.05688,1801.06549,etc |
| path integral | 58 | 12 | 5.182 | 0.00196 | 1801.02582,1801.04083,etc |
| Schr"odinger equation | 37 | 11 | 2.9 | 0.001912 | 1801.08631,1801.04056,etc |
| general solution | 154 | 46 | 3.378 | 0.001908 | 1801.10537,1801.10548,etc |
| metric function | 85 | 29 | 3.0 | 0.00188 | 1801.02026,1801.07151,etc |
| curved background | 36 | 12 | 3.091 | 0.001839 | 1801.07064,1801.05718,etc |
| auxiliary field | 42 | 13 | 3.417 | 0.001706 | 1801.08434,1801.02582,etc |
| exterior region | 34 | 12 | 3.0 | 0.001649 | 1801.03044,1801.07146,etc |
| quantum correction | 76 | 25 | 3.125 | 0.001589 | 1801.08810,1801.01276,etc |
| Lagrange multiplier | 83 | 21 | 4.1 | 0.001578 | 1801.04056,1801.01787,etc |
| boundary condition | 276 | 65 | 4.172 | 0.001507 | 1801.08579,1801.05664,etc |
| mass scale | 38 | 17 | 2.312 | 0.00149 | 1801.02559,1801.03044,etc |
| Hamilton-Jacobi equation | 31 | 11 | 3.0 | 0.001469 | 1801.07989,1801.04056,etc |
| linearized equation | 33 | 11 | 3.2 | 0.001463 | 1801.07064,1801.03840,etc |
| constraint equation | 58 | 19 | 3.167 | 0.001457 | 1801.03044,1801.01787,etc |
| quantum level | 24 | 12 | 2.091 | 0.001454 | 1801.07151,1801.01276,etc |
| Hamilton' equation | 47 | 12 | 4.182 | 0.001443 | 1801.04930,1801.07989,etc |
| dynamical system | 55 | 15 | 3.5 | 0.001434 | 1801.04710,1801.01276,etc |
| Einstein frame | 75 | 16 | 4.933 | 0.001379 | 1801.08136,1801.08810,etc |
| commutation relation | 41 | 20 | 2.105 | 0.001361 | 1801.07280,1801.03918,etc |
| Euler-Lagrange equation | 30 | 14 | 2.154 | 0.001357 | 1801.08136,1801.03044,etc |
| horizon radius | 56 | 16 | 3.667 | 0.001344 | 1801.03044,1801.06051,etc |
| stability condition | 35 | 13 | 2.75 | 0.00134 | 1801.02063,1801.01503,etc |
| scalar field equation | 42 | 15 | 2.857 | 0.001333 | 1801.10548,1801.04056,etc |
| conformal factor | 60 | 25 | 2.458 | 0.001331 | 1801.10537,1801.01987,etc |
| dark sector | 31 | 11 | 2.8 | 0.001322 | 1801.10548,1801.07255,etc |
| slow-roll parameter | 43 | 17 | 2.438 | 0.001287 | 1801.04056,1801.08810,etc |
| quantum mechanic | 77 | 30 | 2.621 | 0.001279 | 1801.05688,1801.08631,etc |
| toy model | 51 | 20 | 2.632 | 0.001266 | 1801.10537,1801.08434,etc |
| quantum field theory | 105 | 48 | 2.213 | 0.001253 | 1801.08631,1801.02176,etc |
| vacuum solution | 35 | 13 | 2.833 | 0.001251 | 1801.09920,1801.03178,etc |
| massive gravity | 33 | 11 | 2.5 | 0.001241 | 1801.07958,1801.09920,etc |
| Kerr solution | 28 | 11 | 2.7 | 0.001231 | 1801.06149,1801.00122,etc |
| quantum theory | 143 | 48 | 3.021 | 0.001221 | 1801.08631,1801.02559,etc |
| dynamical equation | 42 | 20 | 2.105 | 0.001216 | 1801.00676,1801.05138,etc |
| cosmological horizon | 50 | 11 | 4.9 | 0.001212 | 1801.07989,1801.06549,etc |
| asymptotic behavior | 71 | 21 | 2.45 | 0.001195 | 1801.10537,1801.01987,etc |
| spatial infinity | 83 | 23 | 3.682 | 0.001191 | 1801.02026,1801.01787,etc |
| curvature tensor | 29 | 13 | 2.333 | 0.001158 | 1801.08838,1801.03178,etc |
| massive field | 45 | 13 | 3.667 | 0.001157 | 1801.05688,1801.08434,etc |
| Green' function | 44 | 13 | 3.5 | 0.001153 | 1801.04930,1801.02582,etc |
| linear term | 29 | 13 | 2.333 | 0.001147 | 1801.08334,1801.08838,etc |
| Hamiltonian constraint | 56 | 17 | 3.375 | 0.001134 | 1801.04930,1801.05789,etc |
| mass parameter | 29 | 14 | 2.154 | 0.001119 | 1801.05664,1801.04930,etc |
| Kerr spacetime | 67 | 22 | 3.095 | 0.001115 | 1801.06149,1801.04710,etc |
| stress-energy tensor | 65 | 22 | 3.0 | 0.001078 | 1801.00650,1801.07453,etc |
| Bekenstein-Hawking entropy | 29 | 12 | 2.455 | 0.001069 | 1801.10537,1801.02026,etc |
| Newtonian gravity | 53 | 13 | 4.333 | 0.001066 | 1801.03208,1801.03745,etc |
| spacetime dimension | 42 | 15 | 2.571 | 0.001065 | 1801.02582,1801.00122,etc |
| energy scale | 41 | 20 | 2.105 | 0.001044 | 1801.05688,1801.02176,etc |
| interaction term | 42 | 13 | 3.333 | 0.001037 | 1801.02582,1801.00227,etc |
| interaction Hamiltonian | 24 | 11 | 2.3 | 0.001036 | 1801.05688,1801.08434,etc |
| energy-momentum tensor | 165 | 64 | 2.603 | 0.001031 | 1801.02063,1801.05664,etc |
| exact solution | 89 | 40 | 2.231 | 0.001022 | 1801.04930,1801.07989,etc |
| cosmological perturbation | 64 | 23 | 2.682 | 0.001012 | 1801.07885,1801.04056,etc |
| alternative theory | 41 | 14 | 3.077 | 0.001009 | 1801.08136,1801.09920,etc |
| field theory | 86 | 36 | 2.429 | 0.001003 | 1801.05688,1801.00676,etc |
| Einstein' equation | 75 | 30 | 2.483 | 0.001001 | 1801.00650,1801.00307,etc |
| boundary term | 84 | 22 | 3.952 | 0.001001 | 1801.04930,1801.04056,etc |
| physical state | 31 | 14 | 2.308 | 0.000995 | 1801.05789,1801.06017,etc |
| analytical solution | 54 | 22 | 2.524 | 0.000955 | 1801.08136,1801.07453,etc |
| distant observer | 28 | 11 | 2.7 | 0.000944 | 1801.02026,1801.09920,etc |
| matter density | 22 | 11 | 2.1 | 0.000933 | 1801.10548,1801.07453,etc |
| scalar-tensor theory | 80 | 26 | 3.12 | 0.000918 | 1801.07453,1801.07885,etc |
| effective action | 64 | 17 | 3.938 | 0.000906 | 1801.04930,1801.07885,etc |
| differential operator | 39 | 18 | 2.235 | 0.000904 | 1801.03669,1801.00227,etc |
| integrability condition | 39 | 13 | 3.167 | 0.000901 | 1801.01276,1801.03178,etc |
| state parameter | 33 | 16 | 2.067 | 0.000897 | 1801.02269,1801.08402,etc |
| nonumber && | 59 | 16 | 3.8 | 0.000886 | 1801.08434,1801.04710,etc |
| classical limit | 65 | 16 | 4.267 | 0.000882 | 1801.04056,1801.06017,etc |
| massless field | 38 | 14 | 2.615 | 0.000879 | 1801.04930,1801.02582,etc |
| differential equation | 160 | 69 | 2.338 | 0.000872 | 1801.02063,1801.05664,etc |
| Planck scale | 54 | 26 | 2.12 | 0.000862 | 1801.08810,1801.05789,etc |
| Klein-Gordon equation | 47 | 23 | 2.091 | 0.000855 | 1801.10548,1801.04930,etc |
| Schwarzschild solution | 32 | 12 | 2.818 | 0.000845 | 1801.06149,1801.03044,etc |
| gravity theory | 114 | 48 | 2.383 | 0.00084 | 1801.07453,1801.07885,etc |
| flat case | 24 | 11 | 2.3 | 0.000827 | 1801.10548,1801.07064,etc |
| Poisson bracket | 38 | 11 | 3.6 | 0.000805 | 1801.01276,1801.07064,etc |
| evolution equation | 102 | 37 | 2.778 | 0.000797 | 1801.00650,1801.07885,etc |
| right-hand side | 128 | 50 | 2.571 | 0.000782 | 1801.02063,1801.10537,etc |
| black hole horizon | 54 | 25 | 2.208 | 0.000772 | 1801.04930,1801.07989,etc |
|