Horizon surface gravity as 2 d geodesic expansion

  title={Horizon surface gravity as 2 d geodesic expansion},
  author={Ted Jacobson and Renaud Parentani}
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. 

From This Paper

Figures, tables, and topics from this paper.

Explore Further: Topics Discussed in This Paper


Publications citing this paper.
Showing 1-2 of 2 extracted citations

Surface gravities for non-Killing horizons

View 4 Excerpts
Highly Influenced

Analogue Gravity

Living reviews in relativity • 2005
View 1 Excerpt


Publications referenced by this paper.
Showing 1-4 of 4 references

Experimental black hole evaporation

W. G. Unruh
Phys . Rev . Lett . • 1984

Einstein - aether gravity : a status report

S. Mukohyama

Similar Papers

Loading similar papers…