Selection rules for splitting strings

A Achucarro*, R Gregory

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

It has been pointed out that Nielsen-Olesen vortices may be able to decay by pair production of black holes. We show that when the Abelian-Higgs model is embedded in a larger theory, the additional fields mau lead to selection rules for this process-even in the absence of fermions-due to the failure of a charge quantatization condition. We show that when there is topology change, the criterion based on the charge quantization condition supplements the usual criterion based on pi(0)(H). In particular, we find that unless 2 sin(2) theta(W) is a rational number, the thermal splitting of electroweak Z strings by magnetically neutral black holes is impossible, even though pi(0)(H)) is trivial.

Original languageEnglish
Pages (from-to)1972-1975
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number11
Publication statusPublished - 15-Sep-1997

Keywords

  • BLACK-HOLES
  • COSMIC STRINGS
  • TOPOLOGICAL DEFECTS
  • ELECTROWEAK STRINGS
  • SEMILOCAL STRINGS
  • NO-HAIR
  • BREAKING
  • STABILITY
  • MODEL
  • FIELD

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