Calculation of Particle-Number Susceptibility of QED3 at Finite Temperature |
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Authors: | HU Fei JIANG Yu FENG Hong-Tao SUN Wei-Min ZONG Hong-Shi |
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Affiliation: | Department of Physics, Nanjing University, Nanjing 210093Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093 |
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Abstract: | 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 QED3 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 QED3. |
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Keywords: | 11 10 Kk 11 15 Tk 11 30 Qc |
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