4.7 Article

Aharonov-Bohm protection of black hole's baryon/skyrmion hair

Journal

PHYSICS LETTERS B
Volume 768, Issue -, Pages 274-279

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2017.03.004

Keywords

Skyrmion; Black hole; Black hole hair; Aharonov-Bohm effect

Funding

  1. Humboldt Foundation
  2. European Commission [339169]
  3. DFG [SFB/TRR 33]
  4. DFG cluster of excellence [EXC 153]

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The baryon/skyrmion correspondence implies that the baryon number is encoded into a topological surface integral. Under certain conditions that we clarify, this surface integral can be measured by an asymptotic observer in form of an Aharonov-Bohm phase-shift in an experiment in which the skyrmion passes through a loop of a probe string. In such a setup the baryon/skyrmion number must be respected by black holes, despite the fact that it produces no long-range classical field. If initially swallowed by a black hole, the baryon number must resurface in form of a classical skyrmion hair, after the black hole evaporates below a certain critical size. Needless to say, the respect of the baryon number by black holes is expected to have potentially-interesting astrophysical consequences. (C) 2017 The Author(s). Published by Elsevier B.V.

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