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题名: Structure function of holographic quark-gluon plasma: Sakai-Sugimoto model versus its noncritical version
作者: Bu, YY ;  Yang, JM
刊名: PHYSICAL REVIEW D
出版日期: 2011
卷号: 84, 期号:10, 页码:106004
关键词: SCATTERING ;  QCD
学科分类: Physics
通讯作者: Bu, YY (reprint author), Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Bu, Yan Yan; Yang, Jin Min] Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Motivated by recent studies of deep inelastic scattering off the N = 4 super-Yang-Mills (SYM) plasma, holographically dual to an AdS(5) x S(5) black hole, we use the spacelike flavor current to probe the internal structure of one holographic quark-gluon plasma, which is described by the Sakai-Sugimoto model at high temperature phase (i.e., the chiral-symmetric phase). The plasma structure function is extracted from the retarded flavor current-current correlator. Our main aim in this paper is to explore the effect of nonconformality on these physical quantities. As usual, our study is under the supergravity approximation and the limit of large color number. Although the Sakai-Sugimoto model is nonconformal, which makes the calculations more involved than the well-studied N = 4 SYM case, the result seems to indicate that the nonconformality has little essential effect on the physical picture of the internal structure of holographic plasma, which is consistent with the intuition from the asymptotic freedom of QCD at high energy. While the physical picture underlying our investigation is same as the deep inelastic scattering off the N = 4 SYM plasma with(out) flavor, the plasma structure functions are quantitatively different, especially their scaling dependence on the temperature, which can be recognized as model dependent. As a comparison, we also do the same analysis for the noncritical version of the Sakai-Sugimoto model which is conformal in the sense that it has a constant dilaton vacuum. The result for this noncritical model is quite similar to the conformal N = 4 SYM plasma. We therefore attribute the above difference to the effect of nonconformality of the Sakai-Sugimoto model.
资助者: NSFC [10821504, 10725526]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000296913600014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14234
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Bu, YY,Yang, JM. Structure function of holographic quark-gluon plasma: Sakai-Sugimoto model versus its noncritical version[J]. PHYSICAL REVIEW D,2011,84(10):106004.
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