The ultracold atoms are an excellent platform to simulate complex quantum many-body systems of condensed-matter physics. We discuss the quantum phases of a two-dimensional spin-orbit coupled bosons in an optical lattice. This system breaks the rotational symmetry in momentum-space and the condensation occurs at finite momentum. The interplay of single-particle hopping, strength of spin-orbit coupling, and interspin interaction results into finite-momentum superfluidity. At low hopping strengths, the insulating phases are destroyed and phase-twisted superfluid emerges. We further identify a phase-twisted to stripe superfluid transition as hopping strength increases. Finally, we show the role of thermal fluctuations on the stability of finite-momentum superfluids. Our findings are timely and pertinent to the recent progress on quantum gas experiments and pave a way to observe finite-momentum superfluid phases in optical lattices.
|Presenter name||Dr. Kuldeep Suthar|
|How will you attend ICAP-27?||I am planning on virtual registration for online attendance|