Exploring vortex dynamics in the presence of dissipation: Analytical and numerical results

D. Yan, R. Carretero-González, D. J. Frantzeskakis, P. G. Kevrekidis, N. P. Proukakis, D. Spirn

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

In this paper, we examine the dynamical properties of vortices in atomic Bose-Einstein condensates in the presence of phenomenological dissipation, used as a basic model for the effect of finite temperatures. In the context of this so-called dissipative Gross-Pitaevskii model, we derive analytical results for the motion of single vortices and, importantly, for vortex dipoles, which have become very relevant experimentally. Our analytical results are shown to compare favorably to the full numerical solution of the dissipative Gross-Pitaevskii equation where appropriate. We also present results on the stability of vortices and vortex dipoles, revealing good agreement between numerical and analytical results for the internal excitation eigenfrequencies, which extends even beyond the regime of validity of this equation for cold atoms.

Original languageEnglish (US)
Article number043613
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume89
Issue number4
DOIs
StatePublished - Apr 21 2014

Fingerprint Dive into the research topics of 'Exploring vortex dynamics in the presence of dissipation: Analytical and numerical results'. Together they form a unique fingerprint.

  • Cite this