27 citations · 66 across the 3 of their papers we have counts for
3 papers
Particle creation in the effective action method
A. G. Mirzabekian, G. A. Vilkovisky
The effect of particle creation by nonstationary external fields is considered as a radiation effect in the expectation-value spacetime. The energy of created massless particles is…
Partial summation of the nonlocal expansion for the gravitational effective action in 4 dimensions
A. G. Mirzabekian, G. A. Vilkovisky, V. V. Zhytnikov
The vacuum action for the gravitational field admits a known expansion in powers of the Ricci tensor with nonlocal operator coefficients (form factors). We show that going over to…
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…