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A local redundancy in field variables: gauge-related configurations represent the same physical state, while global and boundary gauge transformations may carry physical charges.
wp-physics-gauge_symmetrynlab-physics-gauge_symmetrytong-gaugeEach relation below ends at this concept.
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Each relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Gauge fixing selects representatives or conditions to remove redundant gauge descriptions sufficiently for a chosen quantization or calculation.
A physical process transforms the source into, or produces, the target under the conditions stated in the edge detail.
wp-physics-gauge_fixingnlab-physics-gauge_fixingThis is an authored directed relation from the source endpoint to the target endpoint.
Local gauge transformations depend on spacetime position.
A more specific theory, model, entity class, or regime is obtained by restricting or extending the scope of a broader framework.
wp-physics-gauge_field_theorynlab-physics-gauge_symmetrywp-physics-gauge_symmetryThis is an authored directed relation from the source endpoint to the target endpoint.
In an anomaly-free, suitably gauge-fixed quantum theory, invariance of the generating functional gives Ward–Takahashi identities; the precise form depends on fields, sources, and regularization.
Record a genuine theorem implication that is not part of the target definition; these edges may point toward a weaker structure.
tong-qftcern-qft-intro