中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4401-4406.doi: 10.1088/1674-1056/17/12/012

• GENERAL • 上一篇    下一篇

Dispersion relation of excitation mode in strongly interacting fermions matter

王艳萍, 陈继胜   

  1. Physics Department & Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
  • 收稿日期:2008-01-20 修回日期:2008-04-02 出版日期:2008-12-20 发布日期:2008-12-20
  • 基金资助:
    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).

Dispersion relation of excitation mode in strongly interacting fermions matter

Wang Yan-Ping (王艳萍), Chen Ji-Sheng (陈继胜)   

  1. Physics Department & Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
  • Received:2008-01-20 Revised:2008-04-02 Online:2008-12-20 Published:2008-12-20
  • Supported by:
    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).

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摘要： 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.

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.

Key words: dispersion relation, unitary fermions, polarization tensor

中图分类号:  (Fermion systems and electron gas)

  • 05.30.Fk
03.75.Ss (Degenerate Fermi gases)