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ID 33882
本文ファイル
著者
Aoki, Sinya
Ejiri, Shinji
Hatsuda, Tetsuo
Kanaya, Kazuyuki
Ohno, Hiroshi
Maezawa, Yu
抄録(英)
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.
掲載誌名
Physical Review D
85巻
9号
開始ページ
094508-1
終了ページ
094508-11
出版年月日
2012
出版者
American Physical Society
ISSN
1550-7998
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
(c) 2012 American Physical Society
関連情報URL
部局名
教育学研究科