The authors adapt heat kernel techniques to non-minimal operators and compute DeWitt coefficients a0, a1, a2 to leading order in weak background fields for general NLED, plus exact a0 for conformal theories, with causality comments for convergence.
Local Couplings and Sl(2,R) Invariance for Gauge Theories at One Loop
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
The response of the one loop effective action for a gauge theory with local couplings $g(x),\theta(x)$ under a local Weyl rescaling of the background metric is calculated. Apart from terms which may be removed by local contributions to the effective action the result is compatible with $Sl(2,R)$ symmetry acting on $g,\theta$. Two loop effects are also discussed.
fields
hep-th 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
An auxiliary scalar compensator enables conformal regularization of a vector field model in D ≠ 4, resulting in independent scalar dynamics and interesting properties in the four-dimensional limit.
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Heat kernel approach to the one-loop effective action for nonlinear electrodynamics
The authors adapt heat kernel techniques to non-minimal operators and compute DeWitt coefficients a0, a1, a2 to leading order in weak background fields for general NLED, plus exact a0 for conformal theories, with causality comments for convergence.
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Conformal anomaly in a vector field model with auxiliary scalar field
An auxiliary scalar compensator enables conformal regularization of a vector field model in D ≠ 4, resulting in independent scalar dynamics and interesting properties in the four-dimensional limit.