Mean-field yrast spectrum of a two-component Bose gas in ring geometry: persistent currents at higher angular momentum

Abstract

We use analytic soliton solutions of a two-component Bose gas in ring geometry to analyze the mean-field yrast spectrum of the system. We find that the spectrum exhibits a surprisingly rich structure as a result of the interplay of interparticle interactions and population imbalance. We discuss the implication of these results in regard to the possibility of persistent currents at higher angular momenta.

13 pages, 12 figures

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