English

Abelian Chern-Simons vortices at finite chemical potential

High Energy Physics - Theory 2019-12-25 v1

Abstract

We examine vortices in Abelian Chern-Simons theory coupled to a relativistic scalar field with a chemical potential for particle number or U(1) charge. The Gauss constraint requires chemical potential for the local symmetry to be accompanied by a constant background charge density/magnetic field. Focussing attention on power law scalar potentials Φ2s\sim|\Phi|^{2s} which do not support vortex configurations in vacuum but do so at finite chemical potential, we numerically study classical vortex solutions for large winding number |n| >> 1. The solutions depending on a single dimensionless parameter α\alpha, behave as uniform incompressible droplets with radius αn\sim \sqrt {\alpha |n|} , and energy scaling linearly with |n|, independent of coupling constant. In all cases, the vortices transition from type I to type II at a critical value of the dimensionless parameter, αc=s/(s1)\alpha_c = s/(s-1), which we confirm with analytical arguments and numerical methods.

Keywords

Cite

@article{arxiv.1912.11321,
  title  = {Abelian Chern-Simons vortices at finite chemical potential},
  author = {S. Prem Kumar and Stanislav Stratiev},
  journal= {arXiv preprint arXiv:1912.11321},
  year   = {2019}
}

Comments

22 pages, 12 figures