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Chin. Phys. B, 2011, Vol. 20(9): 090501    DOI: 10.1088/1674-1056/20/9/090501
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Yang–Yang thermodynamics of one-dimensional Bose gases with anisotropic transversal confinement

Hao Ya-Jiang (郝亚江)a) and Yin Xiang-Guo(尹相国)b)
a Department of Physics, University of Science and Technology Beijing, Beijing 100083, China; b Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract  By combining the thermodynamic Bethe ansatz and local density approximation, we investigate the Yang—Yang thermodynamics of interacting one-dimensional Bose gases with anisotropic transversal confinement. It is shown that with the increase of anisotropic parameter at low temperature, the Bose atoms are distributed over a wider region, while at high temperature the density distribution is not affected obviously. Both the temperature and transversal confinement can strengthen the local pressure of the Bose gases.
Keywords:  Bose gas      thermodynamics      anisotropic transversal confinement  
Received:  24 February 2011      Revised:  25 March 2011      Accepted manuscript online: 
PACS:  05.30.Jp (Boson systems)  
  03.75.Hh (Static properties of condensates; thermodynamical, statistical, and structural properties)  
  67.85.-d (Ultracold gases, trapped gases)  

Cite this article: 

Hao Ya-Jiang (郝亚江) and Yin Xiang-Guo(尹相国) Yang–Yang thermodynamics of one-dimensional Bose gases with anisotropic transversal confinement 2011 Chin. Phys. B 20 090501

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