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arXiv 1609.07692hep-ph
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QED $_3$在有限温度下的手征相变

Chiral phase transition in QED$_3$ at finite temperature

Wei Wei, Hai-Xiao Xiao, Hong-Shi Zong

摘要:

在截断Dyson-Schwinger方程(DSE)框架下研究了有限温度下(2+1)维量子电动力学(QED)$_3$中的手征相变.我们超越了广泛使用的瞬时近似,并采用一种方法,保留了完整的费米子自能的频率依赖性。我们还进一步考虑了波函数重正化的影响,并引入了裸顶点的极小修饰。最后,利用截断DSE的更完整解,我们重新研究了有限温度QED $_3$中的手征相变。

英文摘要:

Chiral phase transition in (2+1)-dimensional quantum electrodynamics (QED$_3$) at finite temperature is investigated in the framework of truncated Dyson-Schwinger equations (DSEs). We go beyond the widely used instantaneous approximation and adopt a method that retains the full frequency dependence of the fermion self-energy. We also take further step to include the effects of wave-function renormalizations and introduce a minimal dressing of the bare vertex. Finally, with the more complete solutions of the truncated DSEs, we revisit the study of chiral phase transition in finite-temperature QED$_3$.

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