| Issue |
EPL
Volume 85, Number 6, March 2009
|
|
|---|---|---|
| Article Number | 60004 | |
| Number of page(s) | 5 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/85/60004 | |
| Published online | 08 April 2009 | |
Two-component interacting Tonks-Girardeau gas in a one-dimensional optical lattice
1
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: sjgu@phy.cuhk.edu.hk
Received:
3
February
2009
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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