Divergence of a quantum thermal state on Kerr space-time

Authors
Ottewill, AC Winstanley, E
Citation
Ac. Ottewill et E. Winstanley, Divergence of a quantum thermal state on Kerr space-time, PHYS LETT A, 273(3), 2000, pp. 149-152
Citations number
7
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS A
ISSN journal
03759601 → ACNP
Volume
273
Issue
3
Year of publication
2000
Pages
149 - 152
Database
ISI
SICI code
0375-9601(20000821)273:3<149:DOAQTS>2.0.ZU;2-K
Abstract
We present a simple proof, using the conservation equations, that any quant um stress tensor on Kerr space-time which is isotropic in a frame which rot ates rigidly with the angular velocity of the event horizon must be diverge nt at the velocity of light surface. We comment on our result in the light of the absence of a 'true Hartle-Hawking' vacuum for Kerr. (C) 2000 Elsevie r Science B.V. All rights reserved.