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A spacetime-indexed operator-valued object; rigorously, fields are generally distributions that must be smeared with test functions.
wp-physics-quantum_field_theorynlab-physics-quantum_fieldtong-qftEach relation below ends at this concept.
No direct relations are authored in this direction.
Each relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
A suitably smeared field acting on the vacuum can have overlap with one-particle states; the relation is theory- and stability-dependent.
The source is a material constituent, structural component, or underlying quantum field whose excitation realizes the target physical system or particle. The edge label and detail must distinguish composition from field excitation; neither implies a simple classical sum of parts.
wp-physics-one_particle_statenlab-fock_spacewp-physics-quantum_field_theorynlab-physics-quantum_fieldThis is an authored directed relation from the source endpoint to the target endpoint.
A local quantum field is rigorously interpreted as an operator-valued distribution that must be smeared with test functions, not as a well-defined pointwise operator.
Reinterpret an object, pass to an equivalent presentation, or relate canonically corresponding structures; the carrier may change.
wp-physics-operator_valued_distributionnlab-physics-operator_valued_distributionwp-physics-quantum_field_theorynlab-physics-quantum_fieldtong-qftThis is an authored directed relation from the source endpoint to the target endpoint.
Local field operators are formal ingredients of common QFT formulations.
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
wp-physics-quantum_field_theory