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On the Stability of Non-Abelian Semi-local Vortices

Auzzi, Roberto and Eto, Minoru and Gudnason, Sven Bjarke and Konishi, Kenichi and Vinci, Walter (2009) On the Stability of Non-Abelian Semi-local Vortices. Nuclear Physics B, 813 (3). pp. 484-502. ISSN 1873-1562

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We study the stability of non-Abelian semi-local vortices based on an N=2 supersymmetric H = [SU(Nc) x U(1)]/Z_Nc = U(Nc) gauge theory with an arbitrary number of flavors (Nf > Nc) in the fundamental representation, when certain N=1 mass terms are present, making the vortex solutions no longer BPS-saturated. Local (ANO-like) vortices are found to be stable against fluctuations in the transverse directions. Strong evidence is found that the ANO-like vortices are actually the true minima. In other words, the semi-local moduli, which are present in the BPS limit, disappear in our non-BPS system, leaving the vortex with the orientational moduli CP(Nc-1) only. We discuss the implications of this fact on the system in which the U(Nc) model arises as the low-energy approximation of an underlying e.g. G = SU(Nc+1) gauge theory.

Item Type: Article
Additional Information: Imported from arXiv
Subjects: Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici
Divisions: Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA
Depositing User: dott.ssa Sandra Faita
Date Deposited: 04 Feb 2014 15:10
Last Modified: 04 Feb 2014 15:10
URI: http://eprints.adm.unipi.it/id/eprint/1694

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