Quantum corrections to a spin-orbit coupled Bose-Einstein Condensate
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||15|
|Journal||Physical Review A|
|Publication status||Published - 22 Aug 2019|
|Publication type||A1 Journal article-refereed|
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.