| 1 | friedmann robertson walker | FRW | 69 | 10 | 2.000975 | 0707.2089,0707.4323,etc |
| 2 | post newtonian | PN | 122 | 4 | 2.002539 | 0707.0301,0707.2559,etc |
| 3 | transverse traceless | TT | 51 | 4 | 2.001588 | 0707.0301,0707.1943,etc |
| 4 | extreme mass ratio inspiral | EMRI | 33 | 3 | 2.002689 | 0707.0128,0707.2982,etc |
| 5 | ordinary differential equation | ODE | 23 | 3 | 1.000471 | 0707.0530,0707.2982,etc |
| 6 | null energy condition | NEC | 8 | 3 | 1.000261 | 0707.1183,0707.1636,etc |
| 7 | equation of state parameter | EoS | 17 | 3 | 2.000884 | 0707.4526,0707.2129,etc |
| 8 | kaluza klein | KK | 25 | 3 | 2.001673 | 0707.4537,0707.3983,etc |
| 9 | klebanov strassler | KS | 31 | 3 | 2.000973 | 0707.2737,0707.2848,etc |