Cosmic Strings and Electroweak Symmetry Restoration in the Two-Higgs Doublet Model

Abstract

We investigate the region of restored electroweak symmetry around a superconducting cosmic string coupled to the Weinberg-Salam model with an extra Higgs doublet. We show that the presence of the extra Higgs fields, and in particular their CP violating relative phase, does not qualitatively affect the results of Perkins and Davis[1] obtained for the standard electroweak theory. This result is neccessary to ensure the validity of some recently proposed string-mediated electroweak baryogenesis scenarios.

12 pages, 4 figures (available from the author), uses phyzzx, BROWN-HET-945

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• Electroweak Baryogenesis
• Cosmic Vortons and Particle Physics Constraints
• Local and Nonlocal Defect-Mediated Electroweak Baryogenesis
• Particle Physics Models, Topological Defects and Electroweak Baryogenesis
• Baryon Number Violating Transitions in String Backgrounds