2017/12/18 by Fadi Sun, Junsen Wang, Sun, Fadi +5
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #Quantum Gases (cond-mat.quant-gas) #Quantum, superfluid, helium dynamics #Solar and Space Plasma Dynamics
paper · pdf · doi:10.48550/arxiv.1712.06545
openalex publication_date 2017/12/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study possible superfluid states of the Rashba spin-orbit coupled (SOC) spinor bosons with the spin anisotropic interaction λ hopping in a square lattice. The frustrations from the non-abelian flux due to the SOC leads to novel spin-bond correlated superfluids. By using a recently developed systematic "order from quantum disorder" analysis, we not only determine the true quantum ground state, but also evaluate the mass gap in the spin sector at λ< 1 , especially compute the the excitation spectrum of the Goldstone mode in the spin sector at λ=1 which would be quadratic without the analysis. The analysis also leads to different critical exponents on the two sides of the 2nd order transition driven by a roton touchdown at λ=1 . The intimate analogy at λ=1 with the charge neutral Goldstone mode in the pseudo-spin sector in the Bilayer quantum Hall systems at the total filling factor νT=1 are stressed. The experimental implications and detections of these novel phenomena in cold atoms loaded on a optical lattice are presented.