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Chin. Phys. B, 2008, Vol. 17(12): 4401-4406    DOI: 10.1088/1674-1056/17/12/012
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Dispersion relation of excitation mode in strongly interacting fermions matter

Wang Yan-Ping (王艳萍), Chen Ji-Sheng (陈继胜)
Physics Department & Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
Abstract  This paper analyzes the dispersion relation of the excitation mode in non-relativistic interacting fermion matter. The polarization tensor is calculated with the random phase approximation in terms of finite temperature field theory. With the polarization tensor, the influences of temperature,particle number density and interaction strength on the dispersion relation are discussed in detail. It finds that the collective effects are qualitatively more important in the unitary fermions than those in the finite contact interaction matter.
Keywords:  dispersion relation      unitary fermions      polarization tensor  
Received:  20 January 2008      Revised:  02 April 2008      Accepted manuscript online: 
PACS:  05.30.Fk (Fermion systems and electron gas)  
  03.75.Ss (Degenerate Fermi gases)  
Fund: Project supported in part by the Scientific Starting Research Fund of Central China Normal University, National Natural Science Foundation of China (Grant Nos 10675052 and 10875050) and MOE of China (Grant No IRT0624).

Cite this article: 

Wang Yan-Ping (王艳萍), Chen Ji-Sheng (陈继胜) Dispersion relation of excitation mode in strongly interacting fermions matter 2008 Chin. Phys. B 17 4401

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