Speaker
Dr
Yusuke Taniguchi
(University of Tsukuba)
Description
The canonical partition function is related to the grand canonical one
through the fugacity expansion.
In this talk we perform the fugacity expansion by a method of the
hopping parameter expansion in temporal direction: winding number
expansion.
Since the convergence of our expansion is good only for a small
$\kappa$ we concentrate on heavy quark mass region.
For a numerical simulation we adopt the improved Wilson fermion with
the APE stout smeared gauge links.
The grand canonical partition function is made for $N_f=2$ QCD in the
imaginary chemical potential region including $\mu=0$.
After a derivation of the canonical partition function we study the
Lee-Yang zeros of the complexified grand partition function.
Primary author
Dr
Yusuke Taniguchi
(University of Tsukuba)
Co-authors
Prof.
Atsushi Nakamura
(Hiroshima University)
Mr
Ryutaro Fukuda
(The University of Tokyo)
Mr
Shotaro Oka
(Rikkyo University)
Mr
Shuntaro Sakai
(Kyoto University)
