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gr-qc1995
Conformal Decomposition of the Effective Action and Covariant Curvature Expansion
A. O. Barvinsky, A. G. Mirzabekian, V. V. Zhytnikov
The class of effective actions exactly reproducing the conformal anomaly in 4D is considered. It is demonstrated that the freedom within this class can be fixed by the choice of th…
gr-qc1995
Heat Kernel and Loop Currents by the Generating Function Method
Andrei Barvinsky, Yuri Gusev
The generating function method is applied to the trace of the heat kernel and the one-loop effective action derived from the covariant perturbation theory. The basis of curvature i…