| Einstein frame | 92 | 16 | 5.467 | 0.004372 | 1604.08038,1604.01001,etc |
| inflaton field | 77 | 16 | 5.0 | 0.003841 | 1604.00444,1604.02448,etc |
| first law | 99 | 20 | 4.579 | 0.00378 | 1604.08032,1604.02996,etc |
| Jordan frame | 88 | 13 | 5.583 | 0.003708 | 1604.07330,1604.02470,etc |
| matter distribution | 39 | 13 | 3.0 | 0.003549 | 1604.06947,1604.06576,etc |
| Sitter spacetime | 52 | 14 | 3.923 | 0.003327 | 1604.04313,1604.00882,etc |
| general solution | 83 | 36 | 2.343 | 0.003245 | 1604.02261,1604.08617,etc |
| electric field | 73 | 16 | 3.8 | 0.00304 | 1604.08939,1604.06402,etc |
| tensor-to-scalar ratio | 51 | 15 | 3.5 | 0.002956 | 1604.00444,1604.07213,etc |
| quasinormal mode | 55 | 12 | 4.727 | 0.002752 | 1604.02261,1604.03095,etc |
| gravity theory | 85 | 36 | 2.4 | 0.002735 | 1604.02121,1604.03973,etc |
| boundary term | 176 | 24 | 7.261 | 0.002616 | 1604.08038,1604.02996,etc |
| boundary condition | 270 | 69 | 3.956 | 0.002609 | 1604.04313,1604.02121,etc |
| massive gravity | 95 | 15 | 6.714 | 0.002589 | 1604.08038,1604.04285,etc |
| gravitational field equation | 72 | 19 | 3.944 | 0.002119 | 1604.00463,1604.07213,etc |
| black hole solution | 94 | 22 | 4.286 | 0.002077 | 1604.02121,1604.08332,etc |
| big bang | 47 | 15 | 3.0 | 0.002006 | 1604.04285,1604.05349,etc |
| Green' function | 59 | 11 | 5.0 | 0.00198 | 1604.03847,1604.06345,etc |
| second law | 41 | 14 | 3.077 | 0.001932 | 1604.08032,1604.07213,etc |
| null vector | 43 | 14 | 3.154 | 0.001911 | 1604.08038,1604.05974,etc |
| imaginary part | 76 | 26 | 3.0 | 0.001825 | 1604.02261,1604.03580,etc |
| state parameter | 53 | 18 | 2.706 | 0.001803 | 1604.08032,1604.02996,etc |
| energy-momentum tensor | 205 | 64 | 2.889 | 0.001762 | 1604.03973,1604.02996,etc |
| exact solution | 99 | 38 | 2.568 | 0.001753 | 1604.00463,1604.06402,etc |
| effective equation | 76 | 16 | 5.0 | 0.001605 | 1604.03503,1604.04285,etc |
| spatial infinity | 50 | 18 | 2.882 | 0.001601 | 1604.02261,1604.06402,etc |
| order term | 72 | 29 | 2.5 | 0.001583 | 1604.02121,1604.08038,etc |
| quantum mechanic | 89 | 25 | 3.667 | 0.001521 | 1604.05834,1604.08129,etc |
| nonumber & | 107 | 27 | 3.962 | 0.001483 | 1604.00463,1604.08203,etc |
| quadratic action | 68 | 11 | 6.7 | 0.001471 | 1604.08564,1604.07306,etc |
| light ray | 39 | 12 | 3.455 | 0.001465 | 1604.01394,1604.06576,etc |
| spatial curvature | 35 | 11 | 3.4 | 0.001423 | 1604.07213,1604.06085,etc |
| matter field | 167 | 50 | 3.347 | 0.001396 | 1604.02121,1604.04285,etc |
| Einstein gravity | 90 | 30 | 3.0 | 0.001338 | 1604.02121,1604.03973,etc |
| derivative term | 35 | 11 | 3.3 | 0.001318 | 1604.06402,1604.06016,etc |
| derivative operator | 40 | 12 | 3.091 | 0.001305 | 1604.03973,1604.03847,etc |
| Lie algebra | 54 | 15 | 3.714 | 0.001246 | 1604.00463,1604.07764,etc |
| horizon radius | 46 | 13 | 3.5 | 0.001244 | 1604.00370,1604.02140,etc |
| initial datum | 131 | 26 | 5.04 | 0.001231 | 1604.02261,1604.03445,etc |
| scalar-tensor theory | 93 | 23 | 3.182 | 0.001202 | 1604.07213,1604.06402,etc |
| metric coefficient | 26 | 12 | 2.273 | 0.001091 | 1604.07106,1604.08247,etc |
| asymptotic expansion | 47 | 12 | 4.182 | 0.001085 | 1604.02261,1604.07764,etc |
| kinetic term | 92 | 35 | 2.647 | 0.001051 | 1604.04313,1604.02121,etc |
| dark sector | 23 | 11 | 2.2 | 0.001026 | 1604.03934,1604.01001,etc |
| order correction | 23 | 11 | 2.2 | 0.001008 | 1604.00444,1604.03120,etc |
| Killing horizon | 32 | 11 | 2.9 | 0.000998 | 1604.08067,1604.04468,etc |
| slow-roll parameter | 54 | 21 | 2.65 | 0.000983 | 1604.00141,1604.03120,etc |
| mass scale | 29 | 13 | 2.333 | 0.000972 | 1604.08564,1604.05349,etc |
| present epoch | 31 | 11 | 3.0 | 0.000952 | 1604.03934,1604.05349,etc |
| quantum theory | 84 | 31 | 2.767 | 0.000949 | 1604.01001,1604.08129,etc |
| curvature tensor | 30 | 13 | 2.333 | 0.000943 | 1604.06402,1604.02266,etc |
| effective action | 55 | 19 | 3.0 | 0.000941 | 1604.04313,1604.06402,etc |
| matter content | 65 | 28 | 2.37 | 0.000928 | 1604.03973,1604.08564,etc |
| real part | 49 | 21 | 2.35 | 0.000915 | 1604.02384,1604.02261,etc |
| AdS spacetime | 29 | 12 | 2.545 | 0.000915 | 1604.07764,1604.03363,etc |
| real root | 38 | 12 | 3.364 | 0.000914 | 1604.08203,1604.06085,etc |
| conformal factor | 44 | 20 | 2.211 | 0.000844 | 1604.08038,1604.08032,etc |
| Bessel function | 42 | 13 | 3.417 | 0.000843 | 1604.05834,1604.03095,etc |
| causal structure | 31 | 13 | 2.333 | 0.000803 | 1604.08032,1604.06947,etc |
| matter sector | 52 | 17 | 3.188 | 0.00078 | 1604.04285,1604.02996,etc |
| background level | 28 | 12 | 2.364 | 0.00076 | 1604.08038,1604.04285,etc |
| toy model | 30 | 13 | 2.417 | 0.00076 | 1604.00444,1604.00141,etc |
| noindent We | 32 | 14 | 2.385 | 0.000747 | 1604.03445,1604.00463,etc |
| Planck scale | 63 | 29 | 2.214 | 0.000745 | 1604.02384,1604.08067,etc |
| extra dimension | 46 | 18 | 2.647 | 0.000736 | 1604.08617,1604.02913,etc |
| cosmological background | 28 | 12 | 2.455 | 0.000717 | 1604.08038,1604.08032,etc |
| geodesic equation | 46 | 20 | 2.368 | 0.000716 | 1604.00882,1604.08038,etc |
| stability condition | 24 | 12 | 2.091 | 0.000707 | 1604.07306,1604.00141,etc |
| inner product | 67 | 19 | 3.667 | 0.000704 | 1604.02261,1604.08129,etc |
| field value | 28 | 13 | 2.25 | 0.000701 | 1604.04313,1604.08564,etc |
| matter density | 25 | 11 | 2.4 | 0.000695 | 1604.04285,1604.06947,etc |
| flat spacetime | 75 | 32 | 2.387 | 0.000675 | 1604.06402,1604.07764,etc |
| curvature singularity | 44 | 17 | 2.688 | 0.000671 | 1604.03828,1604.06375,etc |
| metric function | 82 | 33 | 2.438 | 0.000667 | 1604.02121,1604.08617,etc |
| spatial component | 35 | 13 | 2.833 | 0.000665 | 1604.03934,1604.04285,etc |
| tensor field | 45 | 19 | 2.444 | 0.000659 | 1604.03503,1604.07764,etc |
| Schwarzschild spacetime | 32 | 13 | 2.333 | 0.000653 | 1604.02261,1604.08067,etc |
| linear perturbation | 58 | 27 | 2.192 | 0.000647 | 1604.03503,1604.03934,etc |
| left-hand side | 40 | 17 | 2.375 | 0.000613 | 1604.08332,1604.06576,etc |
| differential equation | 111 | 55 | 2.037 | 0.000608 | 1604.04285,1604.00264,etc |
| constraint equation | 50 | 24 | 2.13 | 0.000575 | 1604.03973,1604.08129,etc |
| cosmological implication | 22 | 11 | 2.1 | 0.000543 | 1604.04285,1604.00264,etc |
| background equation | 40 | 13 | 3.25 | 0.000542 | 1604.08038,1604.04285,etc |
| background solution | 33 | 15 | 2.286 | 0.000525 | 1604.00463,1604.06402,etc |
| stress-energy tensor | 65 | 28 | 2.333 | 0.000507 | 1604.04313,1604.04285,etc |
| gravitational action | 37 | 15 | 2.5 | 0.000499 | 1604.08038,1604.07764,etc |
| background evolution | 27 | 13 | 2.083 | 0.000488 | 1604.07306,1604.00141,etc |
| flat case | 27 | 12 | 2.364 | 0.000466 | 1604.07764,1604.08247,etc |
| linear order | 35 | 15 | 2.357 | 0.000432 | 1604.06402,1604.06947,etc |
| matter action | 33 | 16 | 2.067 | 0.000431 | 1604.03973,1604.08067,etc |
| right-hand side | 82 | 37 | 2.25 | 0.000421 | 1604.08332,1604.02632,etc |
| asymptotic behaviour | 26 | 11 | 2.2 | 0.000411 | 1604.02261,1604.07764,etc |
| gravitational theory | 43 | 21 | 2.1 | 0.000371 | 1604.01001,1604.07213,etc |
| asymptotic region | 35 | 12 | 3.0 | 0.000343 | 1604.07764,1604.04625,etc |