| black hole shadow | 71 | 12 | 6.364 | 0.008667 | 1904.00271,1904.00711,etc |
| nonumber && | 127 | 15 | 8.786 | 0.008009 | 1904.01013,1904.01563,etc |
| boson star | 134 | 13 | 6.333 | 0.006274 | 1904.00212,1904.02168,etc |
| Einstein frame | 80 | 15 | 5.643 | 0.00406 | 1904.00153,1904.01427,etc |
| maximum mass | 95 | 17 | 5.875 | 0.003816 | 1904.00282,1904.04258,etc |
| entanglement entropy | 159 | 14 | 12.154 | 0.003385 | 1904.04843,1904.08012,etc |
| timelike curve | 31 | 12 | 2.455 | 0.003162 | 1904.00419,1904.01836,etc |
| black hole solution | 70 | 30 | 2.276 | 0.003003 | 1904.00123,1904.00428,etc |
| massive scalar field | 45 | 14 | 3.385 | 0.002884 | 1904.01212,1904.03131,etc |
| asymptotic expansion | 47 | 18 | 2.235 | 0.00265 | 1904.02463,1904.02622,etc |
| correction term | 58 | 12 | 5.182 | 0.002387 | 1904.06149,1904.06304,etc |
| cosmological constant problem | 47 | 12 | 4.182 | 0.002338 | 1904.01427,1904.07670,etc |
| particle number | 67 | 11 | 6.6 | 0.002283 | 1904.03032,1904.03207,etc |
| exotic matter | 33 | 12 | 2.727 | 0.002244 | 1904.02915,1904.03032,etc |
| black hole thermodynamic | 32 | 13 | 2.583 | 0.002175 | 1904.01345,1904.01836,etc |
| dynamical system | 59 | 14 | 4.462 | 0.00212 | 1904.01013,1904.01525,etc |
| electric field | 127 | 22 | 5.905 | 0.002039 | 1904.00181,1904.00684,etc |
| light ray | 79 | 13 | 6.25 | 0.002007 | 1904.00271,1904.01013,etc |
| quantum field theory | 133 | 62 | 2.164 | 0.001953 | 1904.00419,1904.00428,etc |
| Green' function | 81 | 13 | 2.917 | 0.001936 | 1904.05652,1904.09861,etc |
| quasinormal mode | 66 | 15 | 4.643 | 0.001861 | 1904.03129,1904.03131,etc |
| cosmological solution | 32 | 13 | 2.5 | 0.00173 | 1904.00598,1904.01427,etc |
| Maxwell' equation | 54 | 11 | 5.3 | 0.001657 | 1904.00180,1904.02297,etc |
| finite temperature | 46 | 14 | 3.385 | 0.001583 | 1904.11344,1904.00030,etc |
| effective mass | 62 | 21 | 3.0 | 0.001569 | 1904.00428,1904.01734,etc |
| loop quantum cosmology | 44 | 13 | 3.25 | 0.001533 | 1904.00384,1904.00598,etc |
| vacuum energy density | 28 | 12 | 2.273 | 0.001438 | 1904.01427,1904.03545,etc |
| state parameter | 71 | 22 | 3.333 | 0.001434 | 1904.01060,1904.01427,etc |
| gravity theory | 86 | 34 | 2.364 | 0.001403 | 1904.00153,1904.00180,etc |
| spacetime dimension | 61 | 22 | 2.143 | 0.001387 | 1904.00384,1904.00419,etc |
| Einstein gravity | 53 | 22 | 2.429 | 0.001385 | 1904.00153,1904.00428,etc |
| Advanced LIGO | 32 | 16 | 2.067 | 0.001385 | 1904.00212,1904.00282,etc |
| smooth function | 34 | 15 | 2.286 | 0.001371 | 1904.02557,1904.02822,etc |
| evolution equation | 105 | 34 | 3.121 | 0.001354 | 1904.00153,1904.00181,etc |
| energy-momentum tensor | 124 | 39 | 3.237 | 0.001325 | 1904.00282,1904.00711,etc |
| spatial part | 44 | 14 | 3.308 | 0.001324 | 1904.01013,1904.01034,etc |
| Horndeski theory | 56 | 13 | 4.583 | 0.001323 | 1904.02915,1904.03554,etc |
| first law | 91 | 23 | 4.091 | 0.001317 | 1904.00907,1904.02297,etc |
| Sitter space | 50 | 17 | 3.0 | 0.00131 | 1904.00199,1904.02822,etc |
| late-time acceleration | 27 | 13 | 2.167 | 0.001222 | 1904.01427,1904.01836,etc |
| astrophysical black hole | 28 | 13 | 2.083 | 0.001216 | 1904.00684,1904.02035,etc |
| complex scalar field | 49 | 17 | 3.0 | 0.00121 | 1904.02168,1904.03032,etc |
| tensor-to-scalar ratio | 57 | 16 | 3.733 | 0.001199 | 1904.01345,1904.03915,etc |
| stress energy tensor | 26 | 12 | 2.273 | 0.001174 | 1904.00419,1904.01034,etc |
| stress-energy tensor | 71 | 26 | 2.44 | 0.00117 | 1904.00062,1904.00419,etc |
| diffeomorphism invariance | 28 | 11 | 2.7 | 0.001155 | 1904.00153,1904.04434,etc |
| asymptotic region | 36 | 16 | 2.333 | 0.001155 | 1904.02822,1904.03032,etc |
| gravitational theory | 51 | 25 | 2.042 | 0.001144 | 1904.00282,1904.01034,etc |
| scalar hair | 36 | 14 | 2.462 | 0.001135 | 1904.00123,1904.00428,etc |
| scalar field equation | 35 | 12 | 3.091 | 0.001119 | 1904.00153,1904.00199,etc |
| Boyer-Lindquist coordinate | 32 | 14 | 2.385 | 0.001119 | 1904.00271,1904.01013,etc |
| Kerr spacetime | 45 | 15 | 3.143 | 0.001115 | 1904.00271,1904.01013,etc |
| physical system | 34 | 17 | 2.062 | 0.001102 | 1904.00428,1904.01013,etc |
| Schwarzschild spacetime | 73 | 13 | 5.75 | 0.001085 | 1904.01013,1904.04101,etc |
| effective action | 53 | 19 | 2.333 | 0.001081 | 1904.01427,1904.07042,etc |
| gravity model | 49 | 15 | 3.357 | 0.001077 | 1904.00180,1904.01455,etc |
| inflaton field | 27 | 13 | 2.167 | 0.001075 | 1904.00062,1904.00199,etc |
| curved spacetime | 106 | 38 | 2.838 | 0.001071 | 1904.00062,1904.00153,etc |
| continuum limit | 48 | 13 | 3.833 | 0.001068 | 1904.00384,1904.00598,etc |
| two-point function | 57 | 17 | 3.5 | 0.00106 | 1904.00419,1904.01075,etc |
| path integral | 81 | 14 | 6.0 | 0.001053 | 1904.00598,1904.07042,etc |
| analytic solution | 38 | 18 | 2.059 | 0.001047 | 1904.00123,1904.02557,etc |
| metric function | 79 | 32 | 2.516 | 0.001046 | 1904.01249,1904.02297,etc |
| alternative theory | 42 | 18 | 2.412 | 0.000991 | 1904.01734,1904.01836,etc |
| present time | 41 | 16 | 2.667 | 0.000987 | 1904.01427,1904.02463,etc |
| distant observer | 28 | 11 | 2.7 | 0.000983 | 1904.00271,1904.01013,etc |
| nonumber & | 93 | 36 | 2.629 | 0.000966 | 1904.00711,1904.03129,etc |
| boundary condition | 322 | 93 | 3.489 | 0.000959 | 1904.00123,1904.00199,etc |
| Kerr solution | 25 | 12 | 2.182 | 0.000939 | 1904.02822,1904.04831,etc |
| mode function | 59 | 15 | 3.929 | 0.000933 | 1904.01075,1904.02803,etc |
| large limit | 62 | 16 | 4.067 | 0.00092 | 1904.00199,1904.03207,etc |
| horizon radius | 28 | 14 | 2.077 | 0.000918 | 1904.00271,1904.02035,etc |
| dark sector | 30 | 12 | 2.091 | 0.000914 | 1904.01836,1904.05431,etc |
| symmetric spacetime | 36 | 17 | 2.188 | 0.000897 | 1904.01013,1904.02035,etc |
| Levi-Civita connection | 43 | 13 | 3.417 | 0.000888 | 1904.01427,1904.01734,etc |
| electromagnetic counterpart | 25 | 12 | 2.182 | 0.000873 | 1904.00384,1904.03131,etc |
| matter source | 29 | 13 | 2.333 | 0.000868 | 1904.01525,1904.02822,etc |
| Planck scale | 70 | 31 | 2.3 | 0.000865 | 1904.00384,1904.01075,etc |
| Newtonian gravity | 33 | 13 | 2.417 | 0.000852 | 1904.02822,1904.04142,etc |
| Riemannian manifold | 27 | 11 | 2.6 | 0.000839 | 1904.01013,1904.01966,etc |
| other mode | 26 | 11 | 2.5 | 0.000817 | 1904.02300,1904.02744,etc |
| imaginary part | 95 | 34 | 2.848 | 0.000814 | 1904.00062,1904.00199,etc |
| background equation | 29 | 11 | 2.8 | 0.000812 | 1904.00153,1904.01563,etc |
| background evolution | 35 | 15 | 2.429 | 0.0008 | 1904.01563,1904.02622,etc |
| Hamiltonian constraint | 110 | 28 | 3.741 | 0.000799 | 1904.01212,1904.02247,etc |
| Taylor expansion | 32 | 14 | 2.385 | 0.000788 | 1904.01427,1904.02785,etc |
| central density | 33 | 13 | 2.667 | 0.000785 | 1904.00907,1904.04258,etc |
| series expansion | 32 | 14 | 2.385 | 0.000778 | 1904.02463,1904.02557,etc |
| no-hair theorem | 29 | 13 | 2.333 | 0.00077 | 1904.00428,1904.04103,etc |
| Schwarzschild solution | 50 | 22 | 2.333 | 0.000765 | 1904.01966,1904.03554,etc |
| Einstein' equation | 68 | 32 | 2.129 | 0.000763 | 1904.00419,1904.01427,etc |
| constraint equation | 39 | 16 | 2.133 | 0.000747 | 1904.01075,1904.02168,etc |
| initial datum | 101 | 24 | 4.348 | 0.000747 | 1904.01075,1904.02168,etc |
| analytical solution | 40 | 19 | 2.167 | 0.000742 | 1904.01212,1904.01525,etc |
| kinetic term | 87 | 39 | 2.184 | 0.000738 | 1904.00282,1904.00384,etc |
| real part | 51 | 23 | 2.273 | 0.00073 | 1904.00428,1904.00684,etc |
| scalar-tensor theory | 75 | 21 | 3.6 | 0.000727 | 1904.01427,1904.01734,etc |
| extra dimension | 38 | 18 | 2.118 | 0.000706 | 1904.01455,1904.01563,etc |
| Poisson bracket | 36 | 13 | 2.917 | 0.000701 | 1904.01212,1904.02247,etc |
| differential equation | 131 | 57 | 2.321 | 0.000687 | 1904.00282,1904.00684,etc |
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