Nonabelian Strings and Axion

Abstract

We address two distinct but related issues: (i) the impact of (two-dimensional) axions in a two-dimensional theory known to model confinement, the CP(N-1) model; (ii) bulk axions in four-dimensional Yang-Mills theory supporting non-Abelian strings. In the first case n, \bar n kinks play the role of "quarks." They are known to be confined. We show that introduction of axions leads to deconfinement (at very large distances). This is akin to the phenomenon of wall liberation in four-dimensional Yang-Mills theory. In the second case we demonstrate that the bulk axion does not liberate confined (anti)monopoles, in contradistinction with the two-dimensional model. A novel physical effect which we observe is the axion radiation caused by monopole-antimonopole pairs attached to the non-Abelian strings.

16 pp, 4 figures

References in corpus (1)

• Three-Form Gauging of axion Symmetries and Gravity

Cited by in corpus (10)

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• Confined Magnetic Monopoles in Dense QCD
• Small Instantons in $C{P}^1$ and $C{P}^2$ Sigma Models
• The CP(N-1) model on a Disc and Decay of a Non-Abelian String
• Impact of Axions on Confinement in Three and Two Dimensions
• Some comments about emission channels of non abelian vortices