Click here to view fulltext PDF

Permanent link:
https://www.ias.ac.in/article/fulltext/pram/012/02/0103-0120

Kerr black hole; Hawking effect; scalar fields; Dirac fields

Unruh’s technique of replacing collapse by boundary conditions on the past horizon (theξ-quantisation scheme) for the derivation of the well-known Hawking radiation is extended to the Kerr black hole for the scalar and especially for the spin half field. The expectation value of the energy momentum tensor is evaluated asymptotically in theξ-vacuum state yielding explicitly the net Hawking flux of scalar and spin half quanta. The appropriate statistical distribution that emerges naturally for Dirac quanta validates the ξ-scheme for fermions and confirms the association of temperature with a Kerr black hole.

B R Iyer¹ Arvind Kumar¹

1. Department of Physics, University of Bombay, Bombay - 400 098

Published

February 1979

Manuscript received

16 September 1978

Manuscript revised

1 December 1978