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A Fock-space formalism using field, creation, and annihilation operators to represent variable occupation numbers; it is a reformulation for fixed particle species, not literally a second act of quantization in all uses.
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Annihilation operators are components of the second-quantized occupation-number formalism.
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
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Creation operators are components of the second-quantized occupation-number formalism.
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
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Fock space supplies the occupation-number state space for second quantization.
A mathematical concept supplies part of the formal language, state space, representation, or analytic machinery used by a scientific or mathematical-physics concept. The source is the mathematical predecessor; this does not claim that physical content follows from mathematics alone.
wp-physics-second_quantizationnlab-physics-second_quantizationwp-fock_spacenlab-fock_spaceThis is an authored directed relation from the source endpoint to the target endpoint.
Second quantization reformulates many-body states and operators in Fock space.
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