Stability of plane-wave Bose-Einstein condensation with spin-orbit coupling
School of Science, Beijing Technology and Business
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Received in final form: 21 October 2012
Published online: 19 March 2013
In this paper, we prove analytically that the plane-wave Bose-Einstein condensates with spin-orbit coupling are stable in two dimensions at zero temperature. The SOC induced extra breaking of the O(2) symmetry of the ground state makes the goldstone modes more divergent in the infrared limit. But the depletions are still finite, which means the condensates are stable.
Key words: Cold Matter and Quantum Gas
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2013