WEKO3
-
RootNode
アイテム
Equation of state and heavy-quark free energy at finite temperature and density in two flavor lattice QCD with Wilson quark action
http://hdl.handle.net/10191/27643
http://hdl.handle.net/10191/27643896dc8c8-24fe-4435-a6ae-09ace0205ad7
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
82_1_014508.pdf (1.7 MB)
|
|
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2014-06-23 | |||||
| タイトル | ||||||
| タイトル | Equation of state and heavy-quark free energy at finite temperature and density in two flavor lattice QCD with Wilson quark action | |||||
| タイトル | ||||||
| タイトル | Equation of state and heavy-quark free energy at finite temperature and density in two flavor lattice QCD with Wilson quark action | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Ejiri, S.
× Ejiri, S.× Maezawa, Y.× Ukita, N.× Aoki, S.× Hatsuda, T.× Ishii, N.× Kanaya, K. |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We study the equation of state at finite temperature and density in two-flavor QCD with the renormalization group improved gluon action and the clover-improved Wilson quark action on a 163×4 lattice. Along the lines of constant physics at mPS/mV=0.65 and 0.80, we compute the second and forth derivatives of the grand canonical partition function with respect to the quark chemical potential μq=(μu+μd)/2 and the isospin chemical potential μI=(μu-μd)/2 at vanishing chemical potentials, and study the behaviors of thermodynamic quantities at finite μq using these derivatives for the case μI=0. In particular, we study density fluctuations at nonezero temperature and density by calculating the quark number and isospin susceptibilities and their derivatives with respect to μq. To suppress statistical fluctuations, we also examine new techniques applicable at low densities. We find a large enhancement in the fluctuation of the quark number when the density increased near the pseudocritical temperature, suggesting a critical point at finite μq terminating the first order transition line between hadronic and quark-gluon-plasma phases. This result agrees with the previous results using staggered-type quark actions qualitatively. Furthermore, we study heavy-quark free energies and Debye screening masses at finite density by measuring the first and second derivatives of these quantities for various color channels of heavy quark-quark and quark-antiquark pairs. The results suggest that, to the leading order of μq, the interaction between two quarks becomes stronger at finite densities, while that between quark and antiquark becomes weaker. | |||||
| 書誌情報 |
Physical Review D en : Physical Review D 巻 82, 号 1, p. 014508, 発行日 2010-07 |
|||||
| 出版者 | ||||||
| 出版者 | American Physical Society | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 15507998 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00773624 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1103/PhysRevD.82.014508 | |||||
| 権利 | ||||||
| 権利情報 | (C) 2010 American Physical Society | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
Share
Cite as
Ejiri, S., Maezawa, Y., Ukita, N., Aoki, S., Hatsuda, T., Ishii, N., Kanaya, K., 2010, Equation of state and heavy-quark free energy at finite temperature and density in two flavor lattice QCD with Wilson quark action: American Physical Society, 014508– p.
Loading...
