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

...who believes LOOP quantum gravity
better unites quantum mechanics...
The Big Bang Theory Season 2, Episode 2

You're doing work
in quantum LOOP corrections.
The Big Bang Theory Season 1, Episode 12

Loop quantum gravity
is the future of physics.
The Big Bang Theory Season 2, Episode 2

A LOOP counter and an escape
to the least objectionable activity.
The Big Bang Theory Season 2, Episode 13