Quantum corrections to a spin-orbit coupled Bose-Einstein Condensate

Long Liang, Päivi Törmä

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
168 Downloads (Pure)


We study systematically the quantum corrections to a weakly interacting Bose-Einstein condensate with spin-orbit coupling. We show that quantum fluctuations, enhanced by the spin-orbit coupling, modify quantitatively the mean-field properties such as the superfluid density, spin polarizability, and sound velocity. We find that the phase boundary between the plane wave and zero momentum phases is shifted to a smaller transverse field. We also calculate the Beliaev and Landau damping rates and find that the Landau process dominates the quasiparticle decay even at low temperature.
Original languageEnglish
Article number023619
Pages (from-to)1-15
JournalPhysical Review A
Issue number2
Publication statusPublished - 22 Aug 2019
MoE publication typeA1 Journal article-refereed


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