Nonperturbative late time asymptotics for heat kernel in gravity theory
High Energy Physics - Theory
2009-11-10 v3
Abstract
Recently proposed nonlocal and nonperturbative late time behavior of the heat kernel is generalized to curved spacetimes. Heat kernel trace asymptotics is dominated by two terms one of which represents a trivial covariantization of the flat-space result and another one is given by the Gibbons-Hawking integral over asymptotically-flat infinity. Nonlocal terms of the effective action generated by this asymptotics might underly long- distance modifications of the Einstein theory motivated by the cosmological constant problem. New mechanisms of the cosmological constant induced by infrared effects of matter and graviton loops are briefly discussed.
Cite
@article{arxiv.hep-th/0306052,
title = {Nonperturbative late time asymptotics for heat kernel in gravity theory},
author = {A. O. Barvinsky and Yu. V. Gusev and V. F. Mukhanov and D. V. Nesterov},
journal= {arXiv preprint arXiv:hep-th/0306052},
year = {2009}
}
Comments
22 pages, LaTeX, final version, to be published in Phys. Rev. D