| black hole | 829 | 91 | 9.1 | 0.007802 | 0907.2798,0907.3163,etc |
| extra dimension | 86 | 16 | 5.667 | 0.005547 | 0907.2476,0907.5371,etc |
| loop quantum gravity | 63 | 17 | 3.625 | 0.004563 | 0907.5510,0907.2839,etc |
| Killing vector | 87 | 16 | 5.667 | 0.004461 | 0907.2760,0907.5470,etc |
| dark matter | 118 | 29 | 3.857 | 0.004115 | 0907.4016,0907.3565,etc |
| apparent horizon | 128 | 13 | 10.583 | 0.003943 | 0907.2798,0907.3163,etc |
| geodesic equation | 44 | 12 | 3.909 | 0.003887 | 0907.2760,0907.5470,etc |
| tensor perturbation | 125 | 17 | 7.688 | 0.003828 | 0907.1636,0907.0427,etc |
| dark energy | 205 | 50 | 4.163 | 0.003757 | 0907.2798,0907.3883,etc |
| quantum field theory | 133 | 35 | 3.706 | 0.003735 | 0907.5542,0907.2186,etc |
| angular momentum | 230 | 46 | 5.067 | 0.003584 | 0907.3163,0907.2760,etc |
| gravitational wave | 198 | 43 | 4.595 | 0.003349 | 0907.3163,0907.2760,etc |
| magnetic field | 153 | 19 | 8.444 | 0.003317 | 0907.0913,0907.1936,etc |
| angular velocity | 63 | 13 | 4.417 | 0.003291 | 0907.0410,0907.0671,etc |
| curved spacetime | 122 | 21 | 6.05 | 0.003163 | 0907.5197,0907.3311,etc |
| General Relativity | 100 | 31 | 3.233 | 0.003127 | 0907.1936,0907.5197,etc |
| scalar field | 390 | 83 | 4.695 | 0.003099 | 0907.0913,0907.2476,etc |
| Dirac equation | 48 | 12 | 4.273 | 0.003022 | 0907.0591,0907.5510,etc |
| power spectrum | 179 | 31 | 5.733 | 0.002999 | 0907.2476,0907.5542,etc |
| Einstein tensor | 56 | 19 | 3.056 | 0.002907 | 0907.4135,0907.5197,etc |
| Weyl tensor | 43 | 14 | 3.231 | 0.002884 | 0907.4135,0907.0891,etc |
| vacuum energy | 84 | 19 | 4.611 | 0.002773 | 0907.2839,0907.1640,etc |
| spectral index | 30 | 11 | 2.4 | 0.002675 | 0907.0427,0907.3235,etc |
| continuity equation | 41 | 12 | 3.455 | 0.002599 | 0907.2839,0907.1640,etc |
| cosmological constant problem | 31 | 12 | 2.545 | 0.00246 | 0907.2839,0907.1636,etc |
| wave equation | 95 | 14 | 7.231 | 0.002441 | 0907.2760,0907.5197,etc |
| phase space | 97 | 20 | 3.842 | 0.002398 | 0907.0659,0907.4388,etc |
| electromagnetic field | 92 | 25 | 3.792 | 0.002373 | 0907.0913,0907.0659,etc |
| Hilbert space | 204 | 25 | 8.417 | 0.00235 | 0907.0739,0907.4388,etc |
| luminosity distance | 55 | 14 | 4.154 | 0.002237 | 0907.5197,0907.1988,etc |
| scalar product | 78 | 11 | 7.6 | 0.002228 | 0907.4388,0907.5510,etc |
| dispersion relation | 121 | 13 | 10.0 | 0.002216 | 0907.2839,0907.1636,etc |
| Klein-Gordon equation | 32 | 11 | 3.1 | 0.002186 | 0907.0913,0907.1034,etc |
| field equation | 236 | 68 | 3.507 | 0.002183 | 0907.5197,0907.0591,etc |
| boundary term | 35 | 12 | 3.091 | 0.002107 | 0907.5023,0907.1034,etc |
| curvature perturbation | 93 | 13 | 6.083 | 0.002051 | 0907.2476,0907.5542,etc |
| vacuum energy density | 34 | 13 | 2.583 | 0.002006 | 0907.2839,0907.3744,etc |
| Minkowski spacetime | 67 | 25 | 2.75 | 0.001945 | 0907.5470,0907.2839,etc |
| black hole solution | 59 | 19 | 2.722 | 0.00193 | 0907.0410,0907.1640,etc |
| energy-momentum tensor | 158 | 43 | 3.738 | 0.001819 | 0907.0913,0907.5542,etc |
| conformal transformation | 67 | 18 | 3.882 | 0.001812 | 0907.3163,0907.1030,etc |
| electric charge | 42 | 16 | 2.667 | 0.001782 | 0907.0913,0907.3477,etc |
| metric function | 42 | 12 | 3.727 | 0.001731 | 0907.2760,0907.0913,etc |
| quantum state | 84 | 19 | 4.611 | 0.001705 | 0907.0739,0907.2839,etc |
| event horizon | 159 | 38 | 4.135 | 0.001599 | 0907.2798,0907.2760,etc |
| linear order | 51 | 21 | 2.3 | 0.001585 | 0907.2476,0907.5197,etc |
| conformal factor | 72 | 17 | 4.375 | 0.001577 | 0907.3163,0907.2760,etc |
| gravitational radiation | 75 | 27 | 2.846 | 0.001551 | 0907.3163,0907.2760,etc |
| quantum field | 64 | 24 | 2.652 | 0.00155 | 0907.4135,0907.2760,etc |
| Einstein gravity | 72 | 23 | 3.227 | 0.001542 | 0907.4135,0907.3883,etc |
| energy density | 253 | 78 | 3.221 | 0.001533 | 0907.2798,0907.0913,etc |
| stress tensor | 76 | 13 | 6.0 | 0.001524 | 0907.0656,0907.5023,etc |
| Lie algebra | 59 | 13 | 4.75 | 0.001504 | 0907.5470,0907.5510,etc |
| standard model | 51 | 15 | 3.5 | 0.001498 | 0907.0913,0907.5510,etc |
| density perturbation | 49 | 14 | 3.231 | 0.001467 | 0907.2476,0907.0427,etc |
| gravitational interaction | 44 | 18 | 2.529 | 0.001454 | 0907.5510,0907.2839,etc |
| mass ratio | 63 | 11 | 6.2 | 0.001368 | 0907.3163,0907.2198,etc |
| matter field | 111 | 50 | 2.224 | 0.001366 | 0907.0591,0907.2186,etc |
| Hubble parameter | 63 | 24 | 2.348 | 0.001347 | 0907.2798,0907.3081,etc |
| initial datum | 154 | 25 | 6.333 | 0.001345 | 0907.3163,0907.2760,etc |
| cosmic string | 34 | 11 | 2.6 | 0.001338 | 0907.2198,0907.1640,etc |
| equivalence principle | 36 | 15 | 2.5 | 0.001329 | 0907.3081,0907.0765,etc |
| general relativity | 339 | 92 | 3.681 | 0.001327 | 0907.3163,0907.0659,etc |
| gauge group | 41 | 14 | 3.077 | 0.001318 | 0907.4388,0907.4325,etc |
| spherical harmonics | 55 | 12 | 4.909 | 0.001316 | 0907.3163,0907.0913,etc |
| scale factor | 208 | 54 | 3.906 | 0.001263 | 0907.2476,0907.3883,etc |
| deceleration parameter | 69 | 14 | 5.231 | 0.00125 | 0907.2476,0907.1988,etc |
| galaxy cluster | 43 | 11 | 4.2 | 0.001245 | 0907.0021,0907.1030,etc |
| quantum gravity | 236 | 45 | 5.341 | 0.001224 | 0907.5201,0907.4388,etc |
| dynamical equation | 40 | 12 | 2.727 | 0.001213 | 0907.2839,0907.1701,etc |
| nonumber & | 80 | 18 | 4.647 | 0.00121 | 0907.3883,0907.5378,etc |
| initial condition | 144 | 46 | 3.133 | 0.001198 | 0907.3163,0907.2760,etc |
| conservation law | 35 | 11 | 3.4 | 0.001193 | 0907.2760,0907.0591,etc |
| field theory | 83 | 28 | 3.037 | 0.001192 | 0907.5201,0907.4388,etc |
| differential equation | 104 | 45 | 2.341 | 0.001188 | 0907.0913,0907.2839,etc |
| Einstein field equation | 45 | 19 | 2.444 | 0.00118 | 0907.0696,0907.5197,etc |
| gauge invariance | 48 | 20 | 2.474 | 0.001168 | 0907.2760,0907.2186,etc |
| solar system | 54 | 15 | 3.786 | 0.001164 | 0907.3311,0907.5008,etc |
| cosmic microwave background | 42 | 21 | 2.05 | 0.001139 | 0907.2476,0907.5201,etc |
| wave function | 56 | 16 | 2.667 | 0.001133 | 0907.2839,0907.1706,etc |
| Poisson bracket | 33 | 12 | 2.636 | 0.001068 | 0907.5510,0907.4647,etc |
| Hamiltonian constraint | 95 | 20 | 4.947 | 0.001062 | 0907.3163,0907.2760,etc |
| quantum mechanic | 63 | 20 | 2.368 | 0.001058 | 0907.5201,0907.0739,etc |
| order term | 55 | 24 | 2.217 | 0.001054 | 0907.3163,0907.1936,etc |
| classical theory | 40 | 14 | 2.923 | 0.001028 | 0907.2181,0907.5378,etc |
| Einstein equation | 211 | 58 | 3.684 | 0.001006 | 0907.2798,0907.3163,etc |
| early Universe | 35 | 12 | 3.091 | 0.000998 | 0907.1936,0907.0659,etc |
| inflationary model | 24 | 11 | 2.1 | 0.000996 | 0907.5542,0907.0427,etc |
| covariant derivative | 34 | 17 | 2.062 | 0.000962 | 0907.2760,0907.5197,etc |
| vacuum expectation value | 36 | 17 | 2.062 | 0.00096 | 0907.3081,0907.3744,etc |
| two-point function | 47 | 11 | 4.6 | 0.000959 | 0907.5542,0907.2186,etc |
| vector field | 117 | 43 | 2.714 | 0.000949 | 0907.0913,0907.0656,etc |
| cosmological model | 62 | 30 | 2.034 | 0.000948 | 0907.2839,0907.1988,etc |
| inflaton field | 46 | 13 | 2.833 | 0.000947 | 0907.2476,0907.0427,etc |
| primordial power spectrum | 22 | 11 | 2.1 | 0.000942 | 0907.5542,0907.0427,etc |
| early universe | 73 | 30 | 2.483 | 0.000936 | 0907.2476,0907.0659,etc |
| Bessel function | 28 | 12 | 2.364 | 0.000931 | 0907.2760,0907.0427,etc |
| analytic continuation | 26 | 12 | 2.273 | 0.00093 | 0907.5542,0907.1636,etc |
| quantum fluctuation | 64 | 16 | 4.2 | 0.000921 | 0907.2476,0907.5542,etc |
| Lorentz group | 37 | 11 | 3.6 | 0.000919 | 0907.0591,0907.2839,etc |
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