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arXiv · 1310.1224

Non-Abelian Vortices with an Aharonov-Bohm Effect

Jarah Evslin·Kenichi Konishi·Muneto Nitta·Keisuke Ohashi·Walter Vinci
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Abstract

The interplay of gauge dynamics and flavor symmetries often leads to remarkably subtle phenomena in the presence of soliton configurations. Non-Abelian vortices -- vortex solutions with continuous internal orientational moduli -- provide an example. Here we study the effect of weakly gauging a U(1)_R subgroup of the flavor symmetry on such BPS vortex solutions. Our prototypical setting consists of an SU(2) x U(1) gauge theory with N_f=2 sets of fundamental scalars that break the gauge symmetry to an "electromagnetic" U(1). The weak U(1)_R gauging converts the well-known CP1 orientation modulus |B| of the non-Abelian vortex into a parameter characterizing the strength of the magnetic field that is responsible for the Aharonov-Bohm effect. As the phase of B remains a genuine zero mode while the electromagnetic gauge symmetry is Higgsed in the interior of the vortex, these solutions are superconducting strings.

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Jarah Evslin, Kenichi Konishi, Muneto Nitta, Keisuke Ohashi, Walter Vinci. 2013-10-04. Non-Abelian Vortices with an Aharonov-Bohm Effect. https://doi.org/10.1007/jhep01(2014)086

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