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24 papers · 2 filters
Structure of two-component Bose-Einstein condensates with respective vortex-antivortex superposition states
Linghua Wen, Yongjun Qiao, Yong Xu +1
We investigate the phase structure of two-component Bose-Einstein condensates (BECs) with repulsive intra- and interspecies interactions in the presence of respective vortex-antivo…
Collective modes of spin-orbit coupled Fermi gases in the repulsive regime
Shang-Shun Zhang, Xiao-Lu Yu, Jinwu Ye +1
We investigate the collective modes in the spin-orbit coupled Fermi gas with repulsive s-wave interaction. The interplay between spin-orbit coupling and atom-atom interactions play…
Normal state properties of spin-orbit coupled Fermi gases in the upper branch of energy spectrum
Xiao-Lu Yu, Shang-Shun Zhang, Wu-Ming Liu
We investigate normal state properties of spin-orbit coupled Fermi gases with repulsive s-wave interaction, in the absence of molecule formation, i.e., in the so-called "upper bran…
Zitterbewegung effect in spin-orbit coupled spin-1 ultracold atoms
Yi-Cai Zhang, Song-Wei Song, Chao-Fei Liu +1
The Zitterbewegung effect in spin-orbit coupled spin-1 cold atoms is investigated in the presence of the Zeeman field and a harmonic trap. It is shown that the Zeeman field and the…
Stability of -orbital Bose-Einstein condensates in optical checkerboard and square lattices
Yong Xu, Zhu Chen, Hongwei Xiong +2
We investigate -orbital Bose-Einstein condensates in both the square and checkerboard lattice by numerically solving the Gross-Pitaevskii equation. The periodic potential for th…
Renormalization group analysis of -orbital Bose-Einstein condensates in a square optical lattice
Boyang Liu, Xiao-Lu Yu, Wu-Ming Liu
We investigate the quantum fluctuation effects in the vicinity of the critical point of a -orbital bosonic system in a square optical lattice using Wilsonian renormalization gro…