...
首页> 外文期刊>The European Physical Journal, A. Hadrons and Nuclei >On the chiral phase transition in the linear sigma model
【24h】

On the chiral phase transition in the linear sigma model

机译:关于线性西格玛模型中的手性相变

获取原文
获取原文并翻译 | 示例
           

摘要

The Cornwall-Jackiw-Tomboulis (CJT) effective action for composite operators at finite temperature is used to investigate the chiral phase transition within the framework of the linear sigma model as the low-energy effective model of quantum chromodynamics (QCD). A new renormalization prescription for the CJT effective action in the Hartree-Fock (HF) approximation is proposed. A numerical study, which incorporates both thermal and quantum effect, shows that in this approximation the phase transition is of first order. However, taking into account the higher-loop diagrams contribution the order of phase transition is unchanged.
机译:在有限温度下,康沃尔-杰基夫-通布洛斯(CJT)对复合算子的有效作用用于研究线性sigma模型框架中的手性相变,该方法是量子色动力学(QCD)的低能有效模型。针对Hartree-Fock(HF)近似中的CJT有效作用,提出了一种新的规范化处方。结合热效应和量子效应的数值研究表明,在这种近似中,相变是一阶的。但是,考虑到高级回路图的贡献,相变的顺序不变。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号