Dispersion relation of excitation mode in strongly interacting fermions matter  

作　　者：王艳萍 陈继胜 

机构地区：[1]Physics Department & Institute of Particle Physics, Central China Normal University

出　　处：《Chinese Physics B》2008年第12期4401-4406,共6页中国物理B（英文版）

基　　金：Project supported by the Scientific Starting Research Fund of Central China Normal University;National Natural Science Foundation of China (Grant Nos 10675052 and 10875050);MOE of China (Grant No IRT0624)

摘　　要：This paper analyses 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.This paper analyses 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.

关 键 词：dispersion relation unitary fermions polarization tensor 

分 类 号：O562[理学—原子与分子物理]