Renormalizable acausal theories of classical gravity coupled with interacting quantum fields
| dc.creator | Anselmi, Damiano | |
| dc.creator | Halat, Milenko | |
| dc.date | 2006-11-11 | |
| dc.date | 2007-04-02 | |
| dc.date.accessioned | 2026-07-07T11:23:06Z | |
| dc.date.available | 2026-07-07T11:23:06Z | |
| dc.description | We prove the renormalizability of various theories of classical gravity coupled with interacting quantum fields. The models contain vertices with dimensionality greater than four, a finite number of matter operators and a finite or reduced number of independent couplings. An interesting class of models is obtained from ordinary power-counting renormalizable theories, letting the couplings depend on the scalar curvature R of spacetime. The divergences are removed without introducing higher-derivative kinetic terms in the gravitational sector. The metric tensor has a non-trivial running, even if it is not quantized. The results are proved applying a certain map that converts classical instabilities, due to higher derivatives, into classical violations of causality, whose effects become observable at sufficiently high energies. We study acausal Einstein-Yang-Mills theory with an R-dependent gauge coupling in detail. We derive all-order formulas for the beta functions of the dimensionality-six gravitational vertices induced by renormalization. Such beta functions are related to the trace-anomaly coefficients of the matter subsector. | |
| dc.description | 36 pages; v2: CQG proof-corrected version | |
| dc.identifier | https://arxiv.org/abs/hep-th/0611131 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0611131 | |
| dc.identifier | Class.Quant.Grav.24:1927-1954,2007 | |
| dc.identifier | doi:10.1088/0264-9381/24/8/003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194783 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Renormalizable acausal theories of classical gravity coupled with interacting quantum fields | |
| dc.type | text |