
What about loop quantum GRAVITY?
The Big Bang Theory Season 7, Episode 20

...she's unjustifiably arrogant
about loop quantum GRAVITY...
The Big Bang Theory Season 2, Episode 2

Oh, GRAVITY, thou art a heatless bitch.
The Big Bang Theory Season 1, Episode 2

No, there isn't. Only loop quantum GRAVITY
calculates the entropy of black holes.
The Big Bang Theory Season 2, Episode 2

Besides disrupting the local GRAVITY field.
The Big Bang Theory Season 1, Episode 6