Quantum corrections to a spin-orbit-coupled Bose-Einstein condensate
Quantum corrections to a spin-orbit-coupled Bose-Einstein condensate
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 …