Calculation of particle-number susceptibility of QED3 at finite temperature

被引:0
|
作者
Hu Fei [1 ]
Jiang Yu [1 ]
Feng Hong-Tao [1 ]
Sun Wei-Min [1 ,2 ]
Zong Hong-Shi [1 ,2 ]
机构
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[2] Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China
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中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Based on the external field approach and the differential form of Ward identity, we derive a more compact formula for the particle-number susceptibility in QED(3) at finite temperature. Using the zero frequency approximation the numerical value of the particle-number susceptibility is calculated in the Dyson-Schwinger approach for the case that the number of fermion flavours equals one and two, respectively. An enhanced fluctuation of the particle-number density is observed across the transition temperature, which should be an essential characteristic of chiral phase transition in QED(3).
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页码:2823 / 2826
页数:4
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