
Specifically, QUANTUM field theory
in D-dimensional de Sitter space.
The Big Bang Theory Season 4, Episode 23

that the brain itself
is in two different QUANTUM states,
The Big Bang Theory Season 10, Episode 20

...due to QUANTUM vacuum fluctuation?"
The Big Bang Theory Season 1, Episode 13

...can be achieved by creating a macroscopic
example of QUANTUM superposition...
The Big Bang Theory Season 6, Episode 19

From QUANTUM particles to supernovas.
The Big Bang Theory Season 3, Episode 10