Marginally outer trapped surfaces in higher dimensions
General Relativity and Quantum Cosmology
2013-10-04 v4
Abstract
We review the basic setup of Kaluza-Klein theory, namely a 5-dimensional vacuum with a cyclic isometry, which corresponds to Einstein-Maxwell-dilaton theory in 4-dimensional spacetime. We first recall the behaviour of Killing horizons and its generators under bundle lift and projection. We then show that the property of compact surfaces of being (stably) marginally trapped is preserved under lift and projection provided the appropriate ("Pauli-") conformal scaling is used for the spacetime metric. We also discuss and compare recently proven area inequalities for stable axially symmetric 2-dimensional and 3-dimensional marginally outer trapped surfaces.
Cite
@article{arxiv.1302.3052,
title = {Marginally outer trapped surfaces in higher dimensions},
author = {Tim-Torben Paetz and Walter Simon},
journal= {arXiv preprint arXiv:1302.3052},
year = {2013}
}
Comments
Corrections to version 3: typos only. Corrections to versions 1 and 2: substantial