Non-Topological Gauss-Bonnet type model of gravity with torsion
| dc.creator | Niu, H. | |
| dc.creator | Pak, D. G. | |
| dc.date | 2007-09-13 | |
| dc.date | 2008-03-06 | |
| dc.date.accessioned | 2026-07-07T09:24:49Z | |
| dc.date.available | 2026-07-07T09:24:49Z | |
| dc.description | A non-topological Lorentz gauge model of gravity with torsion based on Gauss-Bonnet type Lagrangian is considered. The Lagrangian differs from the Lovelock term in four-dimensional space-time and has a number of interesting features. We demonstrate that the model admits a propagating torsion unlike the case of the topological Lovelock gravity. Due to additional symmetries of the proposed Gauss-Bonnet type Lagrangian the torsion has a reduced set of dynamical degrees of freedom corresponding to the spin two field, U(1) gauge vector field and spin zero field. A remarkable feature is that the kinetic part of the Hamiltonian containing the spin two field is positively defined. We perform one-loop quantization of the model for a special case of constant Riemann curvature space-time background treating the torsion as a quantum field variable. We discuss a possible mechanism of emergent Einstein gravity as an effective theory which can be induced due to quantum dynamics of torsion. | |
| dc.description | 9 pages, no figures, minor corrections, text improved | |
| dc.identifier | https://arxiv.org/abs/0709.2109 | |
| dc.identifier | http://arxiv.org/abs/0709.2109 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/156198 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Non-Topological Gauss-Bonnet type model of gravity with torsion | |
| dc.type | text |