Information-preserving black holes still do not preserve baryon number and other effective global quantum numbers

Details Information-preserving black holes still do not preserve baryon number and other effective global quantum numbers Information-preserving black holes still do not preserve baryon number and other effective global quantum numbers

2006-04-17

arxiv.org/abs/gr-qc/0604072v1

Int.J.Mod.Phys. D14 (2005) 2293-2300

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Honorable Mention on Gravity Essay Competition 2005; Published in the special Essay issue of Int.J.Mod.Phys

Scientific paper

10.1142/S0218271805007875

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 baryon number and any other quantum number which follows from an effective (and thus approximate) or anomalous symmetry.

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