14–18 Jul 2015
Kobe International Conference Center
Asia/Tokyo timezone

Dirac spectrum representation of Polyakov loop fluctuations in lattice QCD

17 Jul 2015, 14:40
20m
404 (Kobe International Conference Center)

404

Kobe International Conference Center

6-9-1 Minatojima-nakamachi, Chuo-ku, Kobe, Hyogo 650-0046, Japan
Talk Vacuum Structure and Confinement Vacuum Structure and Confinement

Speaker

Mr Takahiro Doi (Kyoto University)

Description

We investigate contribution to the Polyakov loop fluctuations from each Dirac mode. The Polyakov loop fluctuations are sensitive probes for the quark deconfinement even if considering dynamical quarks. We derive analytical relations between the Polyakov loop fluctuations and Dirac modes on the temporally odd-number lattice, where the temporal lattice size is odd, with the normal non-twisted periodic boundary condition for link-variables. These relations indicate that low-lying Dirac modes have little contribution to the Polyakov loop fluctuations. We numerically confirmed that at the quenched level in both confinement and deconfinement phases. Our results suggest that there is no direct one-to-one correspondence between confinement and chiral symmetry breaking in QCD.

Primary author

Mr Takahiro Doi (Kyoto University)

Co-authors

Dr Chihiro Sasaki (Frankfurt Institute for Advanced Studies) Prof. Hideo Suganuma (Kyoto University) Prof. Krzysztof Redlich (Wroclaw University)

Presentation materials