Killing tensors and photon surfaces in foliated spacetimes
General Relativity and Quantum Cosmology
2021-08-11 v1 High Energy Physics - Theory
Abstract
We present a purely geometric method for constructing a rank two Killing tensor in a spacetime with a codimension one foliation that lifts the trivial Killing tensors from slices to the entire manifold. The resulting Killing tensor can be nontrivial. A deep connection is found between the existence of such a Killing tensor and the presence of generalized photon surfaces in spacetime with two Killing vector fields. This technique generates Killing tensors in a purely algebraic way, without solving differential equations. The use of our method is demonstrated for Kerr, Kerr-Newman-NUT-AdS metrics and Kerr-NUT-AdS multicharge gauged supergravity solution.
Keywords
Cite
@article{arxiv.2104.02167,
title = {Killing tensors and photon surfaces in foliated spacetimes},
author = {Kirill Kobialko and Igor Bogush and Dmitri Gal'tsov},
journal= {arXiv preprint arXiv:2104.02167},
year = {2021}
}
Comments
24 pages, revtex4