Quantum theory may mean:
In science:
- Quantum mechanics: a subset of physics explaining the physical behaviours at atomic and sub-atomic levels
- Old quantum theory under the Bohr model
- Quantum field theory, a generic type of relativistic quantum theory, which includes:
- Quantum electrodynamics
- Quantum chromodynamics
- Electroweak interaction
- Quantum gravity, a general term for theories intended to quantize general relativity
- Quantum optics
In popular culture:
- "Quantum Theory", the final song from Jarvis (album), by Jarvis Cocker
- Quantum Theory (video game) is also the name of a console video game for PS3 and Xbox 360, released in 2010
Famous quotes related to quantum theory:
“But how is one to make a scientist understand that there is something unalterably deranged about differential calculus, quantum theory, or the obscene and so inanely liturgical ordeals of the precession of the equinoxes.”
—Antonin Artaud (1896–1948)