Selected Honorable Mentions from the Annual Essay Competition of the Gravity Research Foundation for the Year 2005No Access

INFORMATION-PRESERVING BLACK HOLES STILL DO NOT PRESERVE BARYON NUMBER AND OTHER EFFECTIVE GLOBAL QUANTUM NUMBERS

DEJAN STOJKOVIC

MCTP, Department of Physics, University of Michigan, Ann Arbor, MI 48109-1120, USA

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GLENN D. STARKMAN

Department of Physics, Case Western Reserve University, Cleveland, OH 44106-7079, USA

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, and

FRED C. ADAMS

MCTP, Department of Physics, University of Michigan, Ann Arbor, MI 48109-1120, USA

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https://doi.org/10.1142/S0218271805007875Cited by:19 (Source: Crossref)

Abstract

It has been claimed recently that the black hole information-loss paradox has been resolved: the evolution of quantum states in the presence of a black hole is unitary and information preserving. We point out that, contrary to some claims in literature, information-preserving black holes still violate the baryon number and any other quantum number which follows from an effective (and thus approximate) or anomalous symmetry.

This essay received an "honorable mention" in the 2005 Essay Competition of the Gravity Research Foundation.

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