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arXiv 1408.6313hep-ph
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QED $_3$零密度手性相变的性质

Nature of chiral phase transition in QED$_3$ at zero density

Hong-tao Feng, Jian-Feng Li, Yuan-mei Shi, Hong-shi Zong

摘要:

基于有限温度下手征磁化率和热磁化率的特点,研究了无质量QED $_3$中在临界费米子味数($N_c$)附近的手征相变的性质以及在固定费米子味数下的临界温度($T_c$).结果表明,在有限温度下,系统在$N_c$或$T_c$处发生二级相变,临界指数均小于1,而在零温下,系统在$N_c$附近发生更高阶的连续相变.

英文摘要:

Based on the feature of chiral susceptibility and thermal susceptibility at finite temperature, the nature of chiral phase transition around the critical number of fermion flavors ($N_c$) and the critical temperature ($T_c$) at a fixed fermion flavors number in massless QED$_3$ are investigated. It is showed that, at finite temperature the system exhibits a second-order phase transition at $N_c$ or $T_c$ and each of the estimated critical exponents is less than 1, while it reveals a higher-order continuous phase transition around $N_c$ at zero temperature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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