Work

Horizon surface gravity as 2D geodesic expansion

Year: 2008

Type: article

Abstract: The surface gravity of any Killing horizon, in any spacetime dimension, can be interpreted as a local, two-dimensional expansion rate seen by freely falling observers when they cross the horizon. Any two-dimensional congruence of geodesics invariant under the Killing flow can be used to define this expansion, provided that the observers have unit Killing energy.

Source: Classical and Quantum Gravity

DOI: 10.1088/0264-9381/25/19/195009

Authors: Ted Jacobson, Renaud Parentani

Institutions: University of Maryland, College Park, Université Paris-Sud, Centre National de la Recherche Scientifique

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: National Science Foundation

Award: Towards the Microscopic Structure of Space-Time