English

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