What two theory 's were united by the quantum field theory ?
Quantum theory may mean:In science : Quantum mechanics : a subset of physics explaining the physical behaviours at the molecular , atomic and sub-atomic levels Old quantum theory under the Bohr model or a theory 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 Quantum chemistry In popular culture : " Quantum Theory " , a song from the Jarvis Cocker album " Jarvis " " Quantum Theory " , a 2010 video game by Tecmo