Quasilocal Background Approach to the One-loop Effective Action
E. Rodulfo and M. Tiamzon
Abstract
The one-loop effective action that accommodates an arbitrary number of covariant derivatives of a strong but slowly-varying background field is presented in closed form. The internal symmetry and spacetime dimensions are kept arbitrary in the formalism. This first few terms in the perturbative expansion of the one-loop effective action are derived and are found to agree with those obtained using popular methods.