Vortex dynamics in superfluids governed by an interacting gauge theory
Abstract
We study the dynamics of a vortex in a quasi two-dimensional Bose gas consisting of light matter coupled atoms forming two-component pseudo spins. The gas is subject to a density dependent gauge potential, hence governed by an interacting gauge theory, which stems from a collisionally induced detuning between the incident laser frequency and the atomic energy levels. This provides a back-action between the synthetic gauge potential and the matter field. A Lagrangian approach is used to derive an expression for the force acting on a vortex in such a gas. We discuss the similarities between this force and the one predicted by Iordanskii, Lifshitz and Pitaevskii when scattering between a superfluid vortex and the thermal component is taken into account.
Cite
@article{arxiv.1512.06791,
title = {Vortex dynamics in superfluids governed by an interacting gauge theory},
author = {Salvatore Butera and Manuel Valiente and Patrik Öhberg},
journal= {arXiv preprint arXiv:1512.06791},
year = {2016}
}
Comments
9 pages. Comments are welcome