On the W-hair of String Black Holes and the Singularity Problem

Details On the W-hair of String Black Holes and the Singularity Problem On the W-hair of String Black Holes and the Singularity Problem

1992-04-29

arxiv.org/abs/hep-th/9204096v1

Physics

High Energy Physics

High Energy Physics - Theory

19 pages

Scientific paper

We argue that the infinitely many gauge symmetries of string theory provide an infinite set of conserved (gauge) quantum numbers (W-hair) which characterise black hole states and maintain quantum coherence, even during exotic processes like black hole evaporation/decay. We study ways of measuring the W-hair of spherically-symmetric four-dimensional objects with event horizons, treated as effectively two-dimensional string black holes. Measurements can be done either through the s-wave scattering of light particles off the string black-hole background, or through interference experiments of Aharonov-Bohm type. We also speculate on the role of the extended W-symmetries possessed by the topological field theories that describe the region of space-time around a singularity.

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