Dynamical black holes with symmetry in Einstein-Gauss-Bonnet gravity
| dc.creator | Nozawa, Masato | |
| dc.creator | Maeda, Hideki | |
| dc.date | 2007-10-15 | |
| dc.date | 2008-02-18 | |
| dc.date.accessioned | 2026-07-07T11:53:33Z | |
| dc.date.available | 2026-07-07T11:53:33Z | |
| dc.description | We explore various aspects of dynamical black holes defined by a future outer trapping horizon in $n(\ge 5)$-dimensional Einstein-Gauss-Bonnet gravity. In the present paper, we assume that the spacetime has symmetries corresponding to the isometries of an $(n-2)$-dimensional maximally symmetric space and the Gauss-Bonnet coupling constant is non-negative. Depending on the existence or absence of the general relativistic limit, solutions are classified into GR and non-GR branches, respectively. Assuming the null energy condition on matter fields, we show that a future outer trapping horizon in the GR branch possesses the same properties as that in general relativity. In contrast, that in the non-GR branch is shown to be non-spacelike with its area non-increasing into the future. We can recognize this peculiar behavior to arise from a fact that the null energy condition necessarily leads to the null convergence condition for radial null vectors in the GR branch, but not in the non-GR branch. The energy balance law yields the first law of a trapping horizon, from which we can read off the entropy of a trapping horizon reproducing Iyer-Wald's expression. The entropy of a future outer trapping horizon is shown to be non-decreasing in both branches along its generator. | |
| dc.description | 13 pages, 1 figure, 5 tables; references added, typos corrected, accepted version in CQG | |
| dc.identifier | https://arxiv.org/abs/0710.2709 | |
| dc.identifier | http://arxiv.org/abs/0710.2709 | |
| dc.identifier | Class.Quant.Grav.25:055009,2008 | |
| dc.identifier | doi:10.1088/0264-9381/25/5/055009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204579 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Dynamical black holes with symmetry in Einstein-Gauss-Bonnet gravity | |
| dc.type | text |