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题名: Quark Number Susceptibility with Finite Quark Mass in Holographic QCD
作者: Kim, KI ;  Kim, Y ;  Takeuchi, S ;  Tsukioka, T
刊名: PROGRESS OF THEORETICAL PHYSICS
出版日期: 2011
卷号: 126, 期号:4, 页码:735-751
关键词: CRITICAL-POINT ;  PHASE-DIAGRAM ;  GAUGE-THEORY ;  THERMODYNAMICS ;  LATTICE ;  FLUCTUATIONS ;  ADS/CFT
学科分类: Physics
通讯作者: Kim, KI (reprint author), Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea.
部门归属: [Kim, Kyung-il] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea; [Kim, Youngman; Tsukioka, Takuya] Asia Pacific Ctr Theoret Phys, Pohang 790784, Gyeongbuk, South Korea; [Kim, Youngman] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, Gyeongbuk, South Korea; [Takeuchi, Shingo] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: We study the effect of a finite quark mass on the quark number susceptibility in the framework of holographic QCD. We work in a bottom-up model with a deformed AdS black hole and D3/D7 model to calculate the quark number susceptibility at finite temperature with/without a finite quark chemical potential. As expected the finite quark mass suppresses the quark number susceptibility. We find that at high temperatures T >= 600 MeV the quark number susceptibility of light quarks and heavy quarks are almost equal in the bottom-up model. This indicates that the heavy quark like charm contribution to thermodynamics of a QCD-like system may start to become significant at temperatures T similar to 600 MeV. In D3/D7 model, we focus on the competition between the quark chemical potential, which enhances the quark number susceptibility, and the quark mass that suppresses the susceptibility. We observe that depending on the relative values of the quark mass and the quark chemical potential, the quark number susceptibility shows a diverging or converging behavior. We also calculate the chiral susceptibility in D3/D7 model to support the observation made with the quark number susceptibility.
资助者: Max Planck Society; Korea Ministry of Education, Science and Technology (MEST); Korea Research Foundation [KRF-2006-C00011]; Korean BK21 Program
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000297432500008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14260
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Kim, KI,Kim, Y,Takeuchi, S,et al. Quark Number Susceptibility with Finite Quark Mass in Holographic QCD[J]. PROGRESS OF THEORETICAL PHYSICS,2011,126(4):735-751.
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