| 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 |
| black hole | 1322 | 160 | 8.308 | 0.005659 | 1904.00062,1904.00123,etc |
| critical point | 84 | 20 | 4.368 | 0.005018 | 1904.01563,1904.04871,etc |
| Einstein frame | 80 | 15 | 5.643 | 0.00406 | 1904.00153,1904.01427,etc |
| partition function | 81 | 16 | 5.067 | 0.00404 | 1904.00598,1904.06503,etc |
| phase space | 150 | 38 | 4.027 | 0.003977 | 1904.00153,1904.01212,etc |
| maximum mass | 95 | 17 | 5.875 | 0.003816 | 1904.00282,1904.04258,etc |
| cosmic string | 73 | 16 | 4.8 | 0.003479 | 1904.00123,1904.00711,etc |
| phase transition | 144 | 39 | 3.079 | 0.003404 | 1904.00123,1904.00598,etc |
| entanglement entropy | 159 | 14 | 12.154 | 0.003385 | 1904.04843,1904.08012,etc |
| electromagnetic field | 98 | 23 | 3.318 | 0.003247 | 1904.00181,1904.01525,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 |
| scalar field | 924 | 146 | 6.366 | 0.002635 | 1904.00062,1904.00123,etc |
| free energy | 50 | 11 | 4.9 | 0.002538 | 1904.00123,1904.00428,etc |
| Hawking radiation | 53 | 18 | 2.824 | 0.002521 | 1904.00684,1904.01013,etc |
| supermassive black hole | 40 | 18 | 2.176 | 0.002487 | 1904.00384,1904.00711,etc |
| mass function | 51 | 12 | 4.545 | 0.002464 | 1904.02785,1904.07133,etc |
| apparent horizon | 62 | 12 | 5.182 | 0.002442 | 1904.04831,1904.04842,etc |
| correction term | 58 | 12 | 5.182 | 0.002387 | 1904.06149,1904.06304,etc |
| gauge field | 93 | 25 | 3.542 | 0.002345 | 1904.00428,1904.01427,etc |
| cosmological constant problem | 47 | 12 | 4.182 | 0.002338 | 1904.01427,1904.07670,etc |
| Hubble parameter | 176 | 51 | 3.5 | 0.002321 | 1904.00153,1904.01427,etc |
| dark matter | 231 | 62 | 3.77 | 0.002296 | 1904.00282,1904.00711,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 |
| neutron star | 292 | 53 | 5.596 | 0.002239 | 1904.00282,1904.00907,etc |
| Killing vector | 58 | 23 | 2.591 | 0.002236 | 1904.01455,1904.02822,etc |
| vacuum energy | 61 | 15 | 4.143 | 0.002233 | 1904.01345,1904.01427,etc |
| naked singularity | 34 | 12 | 2.909 | 0.002175 | 1904.00711,1904.02915,etc |
| black hole thermodynamic | 32 | 13 | 2.583 | 0.002175 | 1904.01345,1904.01836,etc |
| power spectrum | 213 | 38 | 5.73 | 0.002126 | 1904.00598,1904.01075,etc |
| dynamical system | 59 | 14 | 4.462 | 0.00212 | 1904.01013,1904.01525,etc |
| scale factor | 347 | 81 | 4.312 | 0.002091 | 1904.00153,1904.00199,etc |
| energy condition | 61 | 21 | 3.0 | 0.002063 | 1904.00282,1904.00419,etc |
| proper time | 88 | 27 | 3.231 | 0.002058 | 1904.00598,1904.01013,etc |
| electric field | 127 | 22 | 5.905 | 0.002039 | 1904.00181,1904.00684,etc |
| curvature perturbation | 91 | 16 | 6.0 | 0.002023 | 1904.01075,1904.01345,etc |
| light ray | 79 | 13 | 6.25 | 0.002007 | 1904.00271,1904.01013,etc |
| decay rate | 64 | 16 | 4.133 | 0.001969 | 1904.00153,1904.03131,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 |
| luminosity distance | 73 | 23 | 3.045 | 0.001892 | 1904.00384,1904.01427,etc |
| wave function | 122 | 24 | 5.261 | 0.001885 | 1904.00199,1904.01836,etc |
| magnetic field | 198 | 37 | 5.417 | 0.001861 | 1904.00181,1904.00428,etc |
| quasinormal mode | 66 | 15 | 4.643 | 0.001861 | 1904.03129,1904.03131,etc |
| kinetic energy | 86 | 31 | 2.833 | 0.001835 | 1904.00907,1904.01013,etc |
| tensor perturbation | 83 | 18 | 4.824 | 0.001828 | 1904.00153,1904.02463,etc |
| charge density | 25 | 11 | 2.3 | 0.001796 | 1904.00428,1904.00684,etc |
| cosmological solution | 32 | 13 | 2.5 | 0.00173 | 1904.00598,1904.01427,etc |
| perfect fluid | 80 | 28 | 2.926 | 0.001679 | 1904.00711,1904.00907,etc |
| quantum state | 90 | 26 | 3.56 | 0.001676 | 1904.00384,1904.00598,etc |
| gravitational wave | 330 | 108 | 3.056 | 0.001674 | 1904.00181,1904.00212,etc |
| Maxwell' equation | 54 | 11 | 5.3 | 0.001657 | 1904.00180,1904.02297,etc |
| dark energy model | 24 | 11 | 2.3 | 0.001626 | 1904.01427,1904.01734,etc |
| quantum field | 78 | 31 | 2.567 | 0.001599 | 1904.00384,1904.00419,etc |
| angular momentum | 306 | 79 | 3.91 | 0.001598 | 1904.00684,1904.01013,etc |
| general relativity | 302 | 115 | 2.605 | 0.001594 | 1904.00180,1904.00212,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 |
| circular orbit | 73 | 21 | 3.6 | 0.001556 | 1904.01013,1904.01060,etc |
| loop quantum cosmology | 44 | 13 | 3.25 | 0.001533 | 1904.00384,1904.00598,etc |
| Hubble radius | 39 | 12 | 3.455 | 0.001532 | 1904.00384,1904.01345,etc |
| event horizon | 229 | 65 | 3.562 | 0.001528 | 1904.00123,1904.00212,etc |
| spectral index | 51 | 15 | 3.571 | 0.001518 | 1904.03545,1904.03915,etc |
| dark energy | 226 | 68 | 3.313 | 0.001511 | 1904.00282,1904.00384,etc |
| expectation value | 203 | 42 | 4.902 | 0.001476 | 1904.00062,1904.00419,etc |
| cosmological parameter | 63 | 24 | 2.609 | 0.001476 | 1904.01427,1904.03460,etc |
| binary system | 102 | 26 | 3.96 | 0.001463 | 1904.00282,1904.00384,etc |
| early universe | 117 | 48 | 2.426 | 0.001446 | 1904.00212,1904.00384,etc |
| upper limit | 82 | 38 | 2.135 | 0.001438 | 1904.01013,1904.01034,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 |
| accretion disk | 53 | 13 | 4.083 | 0.001429 | 1904.01013,1904.03187,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 |
| scalar perturbation | 97 | 33 | 2.938 | 0.001382 | 1904.01075,1904.01563,etc |
| quantum gravity | 198 | 63 | 3.161 | 0.00138 | 1904.00199,1904.00282,etc |
| smooth function | 34 | 15 | 2.286 | 0.001371 | 1904.02557,1904.02822,etc |
| shift vector | 42 | 13 | 3.167 | 0.001365 | 1904.04743,1904.04831,etc |
| early Universe | 90 | 28 | 2.778 | 0.001358 | 1904.00153,1904.00598,etc |
| lapse function | 65 | 21 | 3.2 | 0.001356 | 1904.01212,1904.02622,etc |
| evolution equation | 105 | 34 | 3.121 | 0.001354 | 1904.00153,1904.00181,etc |
| energy density | 379 | 116 | 3.287 | 0.001326 | 1904.00062,1904.00419,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 |
| vacuum expectation value | 35 | 15 | 2.214 | 0.001314 | 1904.00062,1904.00428,etc |
| initial condition | 270 | 89 | 3.034 | 0.00131 | 1904.00062,1904.00153,etc |
| Sitter space | 50 | 17 | 3.0 | 0.00131 | 1904.00199,1904.02822,etc |
| tensor mode | 35 | 11 | 3.3 | 0.0013 | 1904.02300,1904.02803,etc |
| electric charge | 53 | 24 | 2.261 | 0.001286 | 1904.00180,1904.00711,etc |
| ground state | 65 | 17 | 3.938 | 0.001275 | 1904.00199,1904.01836,etc |
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