Striped states in weakly trapped ultracold Bose gases with Rashba spin-orbit coupling

Tomoki Ozawa, Gordon Baym

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

The striped state of ultracold bosons with Rashba spin-orbit coupling in a homogeneous infinite system has, as we show, a constant particle flow, which in a finite-size system would accumulate particles at the boundaries; it is thus not a physical steady state of the system. We propose, as a variational ansatz, a condensate wave function for a weakly trapped system which behaves similarly to the striped state near the center, but does not have particle flow at the boundaries. This state has a line of unquantized coreless vortices. We show, by minimizing the total energy, that our modified striped state has lower energy than the conventional striped state and it is thus a physically appropriate starting point to analyze striped states in finite systems.

Original languageEnglish
Article number063623
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume85
Issue number6
DOIs
Publication statusPublished - 2012 Jun 29

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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