![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
#author("2020-12-08T13:32:12+09:00","default:wikiadm","wikiadm") #author("2020-12-09T11:49:28+09:00","default:wikiadm","wikiadm") *2020年 [#fbb88a52] ***[[Seminar]] [#xdcb8d12] 日時: December 15 (Tue.) 16:00-17:00 場所: Zoom 講演者: Yu Zhang (CCNU) タイトル: Correlated Dirac eigenvalues and axial anomaly in chiral symmetric QCD 概要: How axial anomaly manifests itself at the chiral phase transition temperature affects the nature of chiral phase transition and it is a fundamental question in QCD. In this talk we present a first continuum and chiral extrapolation of two $U_A(1)$ measures in (2+1)-flavor lattice QCD at 1.6$T_c$. By using the proposed novel relations between the quark mass derivatives of Dirac eigenvalue spectrum $\rho$ and correlation functions among eigenvalues we find that the peak structure developed in $\rho$ in the infrared region with its height proportional to quark mass squared is responsible for the current manifestation of axial anomaly. These strongly suggest that the axial anomaly is driven by the weakly interacting (quasi-)instanton gas motived $\rho$ at $T > 1.6T_c$ and the chiral phase transition belongs to 3-d O(4) universality class. - https://arxiv.org/abs/2010.14836 -[http://www-het.ph.tsukuba.ac.jp/~wikiadm/tsukuba-only/2020/seminar20201215_Zhang.pdf 2020/12/15:slides(pdf)] -[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/2020/seminar20201215_Zhang.pdf 2020/12/15:slides(pdf)] 日時: December 8 (Tue.) 14:00-15:00 場所: Zoom 講演者: Yuya Tanizaki (YITP) タイトル: Constraints on possible dynamics of QCD by symmetry and anomaly -[http://www-het.ph.tsukuba.ac.jp/~wikiadm/tsukuba-only/2020/seminar20201208_Tanizaki.pdf 2020/12/8:slides(pdf)] -[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/2020/seminar20201208_Tanizaki.pdf 2020/12/8:slides(pdf)]
