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讲准字267号:Chiral phase transition from holographic QCD

网络真人百家家乐app:2019-09-30|浏览次数:

讲座报告主题:Chiral phase transition from holographic QCD
专家姓名:李丹凝
日期:2019-10-17 时间:15:00
地点:实践楼301
主办单位:理学院  

主讲概况:李丹凝,2009年本科毕业于中国科学技术大学,2014年于中国科学院高能物理研究所获理学博士学位,2014至2016年于中国科学院理论物理研究所从事博士后研究,现为暨南大学副教授、硕士生导师。主要从事高能核物理学相关研究工作,研究兴趣集中于QCD物质系统相变性质的全息方法研究,已在JHEP、PRD、EPJC、PLB等粒子物理与核物理领域主流期刊发表论文20余篇,主持国家自然科学基金项目2项、广东省自然科学基金1项。研究专长:QCD物质系统相变性质的全息方法研究。

主讲内容:We investigate chiral phase transition in the soft-wall model of AdS/QCD at zero chemical potential for two-flavor, three-flavor and two plus one-flavor cases. It is shown that spontaneous chiral symmetry breaking in the vacuum and its restoration at finite temperature can be realized correctly. In two-flavor case, it gives a second order chiral phase transition in chiral limit, while the transition turns to be crossover for any finite quark mass. In the case of three-flavor, the phase transition becomes first order in chiral limit, while above sufficient large quark mass it turns to be crossover again. In two plus one flavor case, a tri-critical point is shown to appear at mu/d=0, ms=290MeV. Qualitatively, the results agree well with current understanding of chiral phase transition from lattice simulations and other effective methods.


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