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ID 33882
file
creator
Aoki, Sinya
Ejiri, Shinji
Hatsuda, Tetsuo
Kanaya, Kazuyuki
Ohno, Hiroshi
Maezawa, Yu
abstract
We study the equation of state in 2+1 flavor QCD with nonperturbatively improved Wilson quarks coupled with the renormalization group-improved Iwasaki glue. We apply the T-integration method to nonperturbatively calculate the equation of state by the fixed-scale approach. With the fixed-scale approach, we can purely vary the temperature on a line of constant physics without changing the system size and renormalization constants. Unlike the conventional fixed-Nt approach, it is easy to keep scaling violations small at low temperature in the fixed-scale approach. We study 2+1 flavor QCD at light quark mass corresponding to mπ/mρ≃0.63, while the strange quark mass is chosen around the physical point. Although the light quark masses are still heavier than the physical values, our equation of state is roughly consistent with recent results with highly improved staggered quarks at large Nt.
journal title
Physical Review D
volume
Volume 85
issue
Issue 9
start page
094508-1
end page
094508-11
date of issued
2012
publisher
American Physical Society
issn
1550-7998
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
(c) 2012 American Physical Society
relation url
department
Graduate School of Education