Vortex dynamics in superfluids governed by an interacting gauge theory

Salvatore Butera, Manuel Valiente Cifuentes, Patrik Ohberg

Research output: Contribution to journalArticle

7 Citations (Scopus)
40 Downloads (Pure)

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.

Original languageEnglish
Article number085001
JournalNew Journal of Physics
Volume18
DOIs
Publication statusPublished - 2 Aug 2016

Keywords

  • quantised vortices
  • superfluids
  • synthetic gauge fields

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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