Dynamics of a space-time crystal in an atomic Bose-Einstein condensate

L. Liao, J. Smits, P. Van der Straten, H.T.C. Stoof

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

A space-time crystal has recently been observed in a superfluid Bose gas. Here we construct a variational model that allows us to describe from first principles the coupling between the radial breathing mode and the higher-order axial modes that underlies the observation of the space-time crystal. By comparing with numerical simulations we verify the validity of our variational Ansatz. From the model we determine the requirements for the observation of the space-time crystal and the Ising-like nature of the symmetry breaking involved. Also, we find the onset and growth rate of the space-time crystal, which can be compared to experiments.

Original languageEnglish
Article number013625
Number of pages9
JournalPhysical Review A
Volume99
Issue number1
DOIs
Publication statusPublished - 29 Jan 2019

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