Noncommutative Vortex Solitons

TL;DR

This paper investigates noncommutative vortex solutions in Abelian-Higgs theory, revealing critical noncommutativity thresholds for BPS solutions, analyzing stability, and exploring vortex dynamics and moduli space structure.

Contribution

It provides a comprehensive analysis of static and dynamic vortex solutions in noncommutative space, including stability criteria and the emergence of matrix moduli.

Findings

BPS solutions vanish beyond a critical noncommutativity scale.

Non BPS solutions are unstable below the critical value.

Matrix moduli naturally describe vortex configurations.

Abstract

We consider the noncommutative Abelian-Higgs theory and investigate general static vortex configurations including recently found exact multi-vortex solutions. In particular, we prove that the self-dual BPS solutions cease to exist once the noncommutativity scale exceeds a critical value. We then study the fluctuation spectra about the static configuration and show that the exact non BPS solutions are unstable below the critical value. We have identified the tachyonic degrees as well as massless moduli degrees. We then discuss the physical meaning of the moduli degrees and construct exact time-dependent vortex configurations where each vortex moves independently. We finally give the moduli description of the vortices and show that the matrix nature of moduli coordinates naturally emerges.