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A formulation of amplitudes and correlation functions as functional integrals, often defined perturbatively or through regulated Euclidean constructions.
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Path-integral quantization uses the classical action in a formal or regulated sum over histories, typically with phase ; making the construction rigorous depends on the theory and signature.
A classical system or field theory is used to construct a quantum theory through a stated quantization procedure. Quantization need not be unique and is not guaranteed to preserve every classical structure.
wp-physics-path_integral_quantizationnlab-physics-path_integral_quantizationThis is an authored directed relation from the source endpoint to the target endpoint.
Path-integral methods construct quantum amplitudes from the classical action after gauge fixing and regularization as needed.
A classical system or field theory is used to construct a quantum theory through a stated quantization procedure. Quantization need not be unique and is not guaranteed to preserve every classical structure.
wp-physics-path_integral_quantizationnlab-physics-path_integral_quantizationwp-physics-classical_field_theorynlab-physics-classical_field_theoryEach relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Path-integral quantization is one major QFT formulation.
The source supplies a substantive formal ingredient, dynamical sector, law, field content, or mechanism of the target theoretical framework.
wp-physics-path_integral_quantizationnlab-physics-path_integral_quantizationwp-physics-quantum_field_theorynlab-physics-quantum_field_theory