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Structure function of holographic quark-gluon plasma: Sakai-Sugimoto model versus its noncritical version
Bu, YY; Yang, JM; Bu, YY (reprint author), Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China.
2011
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号84期号:10页码:106004
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.
部门归属[Bu, Yan Yan; Yang, Jin Min] Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China
关键词Scattering Qcd
学科领域Physics
资助者NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526]
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收录类别SCI
语种英语
资助者NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526] ; NSFC [10821504, 10725526]
WOS记录号WOS:000296913600014
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14234
专题理论物理所SCI论文
通讯作者Bu, YY (reprint author), Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China.
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GB/T 7714
Bu, YY,Yang, JM,Bu, YY . Structure function of holographic quark-gluon plasma: Sakai-Sugimoto model versus its noncritical version[J]. PHYSICAL REVIEW D,2011,84(10):106004.
APA Bu, YY,Yang, JM,&Bu, YY .(2011).Structure function of holographic quark-gluon plasma: Sakai-Sugimoto model versus its noncritical version.PHYSICAL REVIEW D,84(10),106004.
MLA Bu, YY,et al."Structure function of holographic quark-gluon plasma: Sakai-Sugimoto model versus its noncritical version".PHYSICAL REVIEW D 84.10(2011):106004.
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