Mixture of Tonks-Girardeau gas and Fermi gas in one-dimensional optical lattices
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摘要We study the Bose-Fermi mixture with infinite boson-boson repulsion and finite boson-fermion repulsion. Using a generalized Jordan-Wigner transformation, we show that the system can be mapped to a repulsive Hubbard model and thus can be solved exactly for the case with equal boson and fermion masses. Using the Bethe-ansatz solutions, we investigate the ground-state properties of the mixture system. Our results indicate that the system with commensurate filling n = 1 is a charge insulator but still a superfluid with nonvanishing superfluid density. We also briefly discuss the case with unequal boson and fermion masses.
著者Chen S, Cao JP, Gu SJ
期刊名稱Physical Review A
出版年份2010
月份11
日期22
卷號82
期次5
出版社American Physical Society
國際標準期刊號1050-2947
電子國際標準期刊號1094-1622
語言英式英語
Web of Science 學科類別Optics; OPTICS; Physics; Physics, Atomic, Molecular & Chemical; PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
