122 citations · 388 across the 7 of their papers we have counts for
4 papers · 1 filter
The one-loop effective action and trace anomaly in four dimensions
A. O. Barvinsky, Yu. V. Gusev, G. A. Vilkovisky +1
The one-loop effective action for a generic set of quantum fields is calculared as a nonlocal expansion in powers of the curvatures (field strengths). This expansion is obtained to…
Asymptotic behaviours of the heat kernel in covariant perturbation theory
A. O. Barvinsky, Yu. V. Gusev, G. A. Vilkovisky +1
The trace of the heat kernel is expanded in a basis of nonlocal curvature invariants of th order. The coefficients of this expansion (the nonlocal form factors) are calculated t…
The basis of nonlocal curvature invariants in quantum gravity theory
A. O. Barvinsky, Yu. V. Gusev, G. A. Vilkovisky +1
A complete basis of nonlocal invariants in quantum gravity theory is built to third order in spacetime curvature and matter-field strengths. The nonlocal identities are obtained wh…
Some Spinor-Curvature Identities
James M. Nester, Roh Suan Tung, Vadim V. Zhytnikov
We describe a class of spinor-curvature identities which exist for Riemannian or Riemann-Cartan geometries. Each identity relates an expression quadratic in the covariant derivativ…