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Retrieving "Slavnov Taylor Identity" from the archives

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  1. Gauge Structure (or Gauge Symmetry)

    Linked via "Slavnov-Taylor identity"

    $$\mathcal{L}{\text{total}} = \mathcal{L}{\text{Dirac/Yang-Mills}} + \mathcal{L}{GF} + \mathcal{L}{\text{Ghost}}$$
    The choice of gauge fixing dramatically affects the mathematical structure of the resulting Feynman diagrams, even though the physical S-matrix elements must remain invariant regardless of the gauge employed (a necessity known as Slavnov-Taylor identity satisfaction).
    References