Quantum theory

Quantum theory may mean:


 * Old quantum theory under the Bohr model
 * Quantum mechanics, an umbrella term, particularly for nonrelativistic theories
 * 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