Volume 85, Number 6, March 2009
|Number of page(s)||5|
|Published online||08 April 2009|
Two-component interacting Tonks-Girardeau gas in a one-dimensional optical lattice
Department of Physics and ITP, The Chinese University of Hong Kong, Hong Kong, China
2 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Corresponding author: firstname.lastname@example.org
Accepted: 4 March 2009
The two-component interacting Bose gas confined in a one-dimensional optical lattice with infinite intra-component repulsive interactions and tunable inter-component repulsions is studied. By a generalized Jordan-Wigner transformation, it is shown that this model can be solved exactly. The energy spectrum and explicit wave function are obtained. The physical quantities such as the off-diagonal density matrix, momentum distribution and single-particle von Neumann entropy of the present model display different properties from those of the Fermi-Hubbard model due to the different intrinsic symmetry of particles.
PACS: 05.30.Jp – Boson systems / 05.50.+q – Lattice theory and statistics (Ising, Potts, etc.)
© EPLA, 2009
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