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

Abstract

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.

Minor revision, 17 pages with 10 figures

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Cited by in corpus (3)

• Spin-orbit-coupling-assisted roton softening and superstripes in a Rydberg-dressed Bose-Einstein Condensate
• Thermodynamics of spin-orbit coupled bosons in two dimensions from complex Langevin
• Chiral Quantum Droplet in a Spin-Orbit Coupled Bose Gas