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Infrared stability of ground states of spin-orbit coupled Bose–Einstein condensates

  • Pei-Song HeEmail author
  • Wen-Long YouEmail author
Regular Article
  • 37 Downloads

Abstract

We proved that the spin-1 Bose–Einstein condensate with one-dimensional spin-orbit coupling at the tricritical point is stable against excitations of Goldstone modes. The dispersion relations of these modes are anisotropic and cubic in some directions in the momentum space, which are much softer than the ordinary ones with linear form. A particular scaling form of the quantum depletions fraction on spin-orbit coupling strength is found, which is due to the special form of the dispersion relations of the Goldstone modes.

Graphical abstract

Keywords

Cold Matter and Quantum Gas 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Science, Beijing Technology and Business UniversityBeijingP.R. China
  2. 2.School of Physical Science and Technology, Soochow UniversitySuzhouP.R. China

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