Quantum theory may refer to:
Science
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Quantum mechanics, a major field of physics
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Old quantum theory, predating modern quantum mechanics
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Quantum field theory, an area of quantum mechanics that includes:
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Quantum electrodynamics
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Quantum chromodynamics
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Electroweak interaction
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Quantum gravity, a field of theoretical physics
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Quantum optics
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Quantum chemistry
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Quantum information
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, a 1993 book by Asher Peres
Arts and other media
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Quantum Theory (video game), a 2010 video game
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"Quantum Theory", a song on the Jarvis Cocker album Jarvis
