Equation of state in 2+1 flavor QCD with improved Wilson quarks by the fixed scale approach
Physical Review D 85 巻 9 号
094508-1-094508-11 頁
2012 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Equation of state in 2+1 flavor QCD with improved Wilson quarks by the fixed scale approach
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| 作成者 |
Aoki Sinya
Ejiri Shinji
Hatsuda Tetsuo
Kanaya Kazuyuki
Ohno Hiroshi
Maezawa Yu
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| 収録物名 |
Physical Review D
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| 巻 | 85 |
| 号 | 9 |
| 開始ページ | 094508-1 |
| 終了ページ | 094508-11 |
| 抄録 |
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.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2012 |
| 権利情報 |
(c) 2012 American Physical Society
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1550-7998
[DOI] 10.1103/PhysRevD.85.094508
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.85.094508
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