The heat kernel approach for calculating the effective action in quantum field theory and quantum gravity
| dc.creator | Avramidi, Ivan G. | |
| dc.date | 1995-09-14 | |
| dc.date.accessioned | 2026-07-07T04:21:28Z | |
| dc.date.available | 2026-07-07T04:21:28Z | |
| dc.description | A short informal overview about recent progress in the calculation of the effective action in quantum gravity is given. I describe briefly the standard heat kernel approach to the calculation of the effective action and discuss the applicability of the Schwinger - De Witt asymptotic expansion in the case of strong background fields. I propose a new ansatz for the heat kernel that generalizes the Schwinger - De Witt one and is always valid. Then I discuss the general structure of the asymptotic expansion and put forward some approximate explicitly covariant methods for calculating the heat kernel, namely, the high-energy approximation as well as the low-energy one. In both cases the explicit formulae for the heat kernel are given. | |
| dc.description | 21 pages, Plain TeX, 52 KB, no figures | |
| dc.identifier | https://arxiv.org/abs/hep-th/9509077 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9509077 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/54328 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | The heat kernel approach for calculating the effective action in quantum field theory and quantum gravity | |
| dc.type | text |