On the Intrinsic Parity of Black Holes

Details On the Intrinsic Parity of Black Holes On the Intrinsic Parity of Black Holes

2002-07-21

arxiv.org/abs/gr-qc/0207078v2

Phys.Lett. B547 (2002) 133-138

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, Latex. Slightly revised version to appear in Physics Letters B

Scientific paper

10.1016/S0370-2693(02)02810-1

We investigate the intrinsic parity of black holes. It appears that discrete symmetries require the black hole Hilbert space to be larger than suggested by the usual quantum numbers M (mass), Q (charge) and J (angular momentum). Recent results on black hole production in trans-Planckian scattering lead to gravitational effects which do not decouple from low-energy physics. Dispersion relations incorporating these effects imply that the semi-classical black hole spectrum is similar in parity even and odd channels. This result can be generalized to other discrete and continuous symmetries.

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