| massive particle | 93 | 24 | 4.0 | 0.003108 | 2001.00252,2001.00863,etc |
| Einstein frame | 71 | 14 | 4.923 | 0.002714 | 2001.00154,2001.02304,etc |
| hole solution | 41 | 15 | 2.857 | 0.002409 | 2001.00403,2001.00615,etc |
| gravitational perturbation | 32 | 12 | 2.818 | 0.002374 | 2001.00394,2001.00430,etc |
| effective action | 66 | 14 | 5.0 | 0.002236 | 2001.00041,2001.02543,etc |
| anisotropic stress | 42 | 11 | 2.8 | 0.002068 | 2001.00010,2001.00394,etc |
| gravity model | 67 | 16 | 4.4 | 0.001989 | 2001.00816,2001.00863,etc |
| Lagrange multiplier | 72 | 12 | 6.091 | 0.00194 | 2001.02016,2001.02414,etc |
| energy scale | 64 | 24 | 2.739 | 0.001901 | 2001.01729,2001.04680,etc |
| light ray | 72 | 21 | 3.45 | 0.001801 | 2001.00010,2001.00041,etc |
| binary neutron star | 52 | 22 | 2.429 | 0.001677 | 2001.00229,2001.00242,etc |
| quasinormal mode | 42 | 12 | 3.091 | 0.00166 | 2001.00863,2001.01137,etc |
| initial datum | 77 | 25 | 3.167 | 0.001631 | 2001.00031,2001.00252,etc |
| full theory | 39 | 13 | 3.167 | 0.001474 | 2001.00031,2001.02698,etc |
| metric function | 109 | 24 | 4.696 | 0.001467 | 2001.00010,2001.00615,etc |
| black hole horizon | 58 | 20 | 2.158 | 0.001412 | 2001.00010,2001.00041,etc |
| static observer | 37 | 11 | 3.6 | 0.001409 | 2001.00430,2001.00460,etc |
| black hole solution | 73 | 24 | 3.13 | 0.001396 | 2001.00403,2001.00599,etc |
| Levi-Civita connection | 37 | 16 | 2.4 | 0.001382 | 2001.00551,2001.00816,etc |
| metric coefficient | 37 | 12 | 3.273 | 0.001376 | 2001.00010,2001.00599,etc |
| asymptotic expansion | 41 | 17 | 2.5 | 0.001328 | 2001.00403,2001.00430,etc |
| tensor-to-scalar ratio | 66 | 12 | 5.364 | 0.001307 | 2001.00154,2001.05828,etc |
| parameter estimation | 37 | 13 | 2.917 | 0.001284 | 2001.01462,2001.07109,etc |
| Klein-Gordon equation | 55 | 21 | 2.65 | 0.001257 | 2001.00252,2001.00551,etc |
| extra dimension | 46 | 13 | 3.667 | 0.001239 | 2001.00041,2001.00403,etc |
| Schwarzschild spacetime | 77 | 14 | 5.308 | 0.001211 | 2001.00430,2001.00863,etc |
| electric field | 51 | 14 | 3.308 | 0.001194 | 2001.00031,2001.00430,etc |
| Green' function | 44 | 14 | 3.308 | 0.00119 | 2001.01301,2001.07350,etc |
| cosmological scale | 42 | 13 | 3.417 | 0.001183 | 2001.00863,2001.02304,etc |
| conformal factor | 51 | 20 | 2.632 | 0.001135 | 2001.00551,2001.00599,etc |
| dynamical system | 70 | 13 | 5.417 | 0.001133 | 2001.00252,2001.00825,etc |
| hypergeometric function | 34 | 11 | 2.8 | 0.001112 | 2001.00599,2001.01301,etc |
| cosmological horizon | 97 | 18 | 3.824 | 0.001098 | 2001.00394,2001.00599,etc |
| boundary term | 65 | 15 | 4.571 | 0.00109 | 2001.00394,2001.03169,etc |
| conformal symmetry | 49 | 12 | 4.364 | 0.00109 | 2001.00615,2001.00816,etc |
| black hole thermodynamic | 36 | 14 | 2.692 | 0.001083 | 2001.00615,2001.00863,etc |
| quantum level | 51 | 14 | 3.846 | 0.001065 | 2001.04423,2001.04978,etc |
| best-fit value | 26 | 11 | 2.5 | 0.001059 | 2001.00935,2001.08391,etc |
| present time | 33 | 14 | 2.462 | 0.001058 | 2001.02474,2001.03228,etc |
| Einstein' equation | 83 | 34 | 2.455 | 0.001017 | 2001.00027,2001.00229,etc |
| finite distance | 32 | 12 | 2.455 | 0.001017 | 2001.00460,2001.01281,etc |
| interaction term | 39 | 18 | 2.235 | 0.000999 | 2001.00011,2001.02016,etc |
| effective mass | 36 | 14 | 2.615 | 0.000999 | 2001.00460,2001.00935,etc |
| inflationary model | 39 | 14 | 2.923 | 0.000977 | 2001.03228,2001.05828,etc |
| quantum mechanic | 72 | 30 | 2.448 | 0.000973 | 2001.00551,2001.00556,etc |
| Einstein-Hilbert action | 55 | 22 | 2.524 | 0.000969 | 2001.01806,2001.02543,etc |
| stress-energy tensor | 69 | 23 | 3.045 | 0.000962 | 2001.00010,2001.00394,etc |
| quantum theory | 71 | 28 | 2.444 | 0.000959 | 2001.00031,2001.00551,etc |
| mass scale | 36 | 11 | 3.5 | 0.000949 | 2001.00154,2001.03169,etc |
| quantum field theory | 78 | 34 | 2.333 | 0.000949 | 2001.00615,2001.02543,etc |
| Kerr spacetime | 45 | 17 | 2.75 | 0.000917 | 2001.00041,2001.00460,etc |
| curved spacetime | 67 | 25 | 2.083 | 0.000898 | 2001.00031,2001.00430,etc |
| Newtonian gravity | 59 | 17 | 3.562 | 0.000891 | 2001.00229,2001.00279,etc |
| cosmological perturbation | 49 | 14 | 3.538 | 0.000882 | 2001.00816,2001.02591,etc |
| annihilation operator | 30 | 12 | 2.636 | 0.000879 | 2001.02474,2001.02543,etc |
| quantum gravity effect | 32 | 11 | 2.4 | 0.000865 | 2001.00031,2001.00154,etc |
| spatial infinity | 48 | 20 | 2.421 | 0.000851 | 2001.00460,2001.01301,etc |
| analytic solution | 35 | 15 | 2.429 | 0.000847 | 2001.00403,2001.05723,etc |
| Euler-Lagrange equation | 33 | 12 | 2.636 | 0.000833 | 2001.01137,2001.02304,etc |
| electromagnetic counterpart | 35 | 13 | 2.833 | 0.000805 | 2001.00863,2001.08745,etc |
| scalar-tensor theory | 39 | 16 | 2.333 | 0.0008 | 2001.02016,2001.02304,etc |
| geodesic equation | 69 | 26 | 2.52 | 0.000791 | 2001.00041,2001.00551,etc |
| boundary condition | 138 | 55 | 2.537 | 0.000771 | 2001.00041,2001.00430,etc |
| momentum space | 36 | 11 | 3.3 | 0.000768 | 2001.02591,2001.04680,etc |
| Einstein' theory | 50 | 16 | 3.267 | 0.000767 | 2001.00229,2001.00863,etc |
| conservation equation | 33 | 13 | 2.667 | 0.000759 | 2001.00011,2001.00394,etc |
| exact solution | 106 | 39 | 2.684 | 0.00072 | 2001.00252,2001.00394,etc |
| spatial curvature | 47 | 16 | 3.067 | 0.000705 | 2001.00394,2001.00825,etc |
| quantum correction | 54 | 19 | 2.833 | 0.000702 | 2001.00010,2001.00556,etc |
| matter sector | 44 | 21 | 2.05 | 0.000702 | 2001.00394,2001.00816,etc |
| posterior distribution | 39 | 18 | 2.235 | 0.000698 | 2001.00821,2001.01462,etc |
| evolution equation | 68 | 27 | 2.577 | 0.000692 | 2001.00252,2001.00394,etc |
| asymptotic behavior | 36 | 16 | 2.2 | 0.000689 | 2001.01591,2001.01729,etc |
| numerical relativity | 25 | 11 | 2.4 | 0.000652 | 2001.00352,2001.05723,etc |
| cosmological evolution | 50 | 17 | 3.0 | 0.000637 | 2001.02016,2001.02414,etc |
| kinetic term | 50 | 25 | 2.042 | 0.000627 | 2001.02414,2001.03169,etc |
| gravity theory | 67 | 27 | 2.308 | 0.000606 | 2001.00010,2001.00041,etc |
| energy-momentum tensor | 131 | 57 | 2.179 | 0.000604 | 2001.00252,2001.00403,etc |
| mass parameter | 26 | 13 | 2.083 | 0.000589 | 2001.00430,2001.00615,etc |
| source term | 46 | 16 | 3.0 | 0.000579 | 2001.00430,2001.00863,etc |
| waveform model | 38 | 11 | 3.5 | 0.000563 | 2001.09082,2001.09553,etc |
| infinite number | 37 | 18 | 2.059 | 0.000557 | 2001.00394,2001.00430,etc |
| total energy density | 26 | 13 | 2.083 | 0.000552 | 2001.02918,2001.03943,etc |
| derivative term | 29 | 12 | 2.545 | 0.000549 | 2001.00154,2001.04367,etc |
| state parameter | 44 | 18 | 2.294 | 0.000546 | 2001.00010,2001.00011,etc |
| analytic continuation | 35 | 13 | 2.583 | 0.000513 | 2001.00352,2001.01137,etc |
| geodesic motion | 25 | 11 | 2.4 | 0.000472 | 2001.00352,2001.02038,etc |
| spacetime dimension | 48 | 19 | 2.333 | 0.000452 | 2001.00599,2001.01301,etc |
| constraint equation | 25 | 12 | 2.091 | 0.00043 | 2001.01301,2001.02016,etc |
| effective theory | 36 | 14 | 2.615 | 0.000412 | 2001.01301,2001.06148,etc |
| perturbative expansion | 23 | 11 | 2.2 | 0.000394 | 2001.00394,2001.00430,etc |
| nonumber && | 36 | 13 | 2.917 | 0.000365 | 2001.00352,2001.00816,etc |
| matter field | 91 | 44 | 2.023 | 0.000364 | 2001.00027,2001.00394,etc |
| right-hand side | 82 | 35 | 2.353 | 0.000354 | 2001.00229,2001.00352,etc |
| order term | 57 | 27 | 2.077 | 0.00035 | 2001.00599,2001.01281,etc |
| delta function | 27 | 11 | 2.3 | 0.000256 | 2001.00041,2001.00430,etc |