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题名: Fluctuations and correlations of conserved charges in QCD at finite temperature with effective models
作者: Fu, Wei-jie ;  Liu, Yu-xin ;  Wu, Yue-Liang
刊名: PHYSICAL REVIEW D
出版日期: 2010
卷号: 81, 期号:1, 页码:-
关键词: QUARK-GLUON PLASMA ;  NONZERO BARYON NUMBER ;  EQUATION-OF-STATE ;  PHASE-TRANSITION ;  LATTICE QCD ;  HADRONIC FLUCTUATIONS ;  PARTICLE PHYSICS ;  POLYAKOV LOOP ;  DENSITY ;  MATTER
学科分类: Physics
通讯作者: Fu, WJ , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
部门归属: [Fu, WJ; Wu, YL] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Liu, YX] Peking Univ, Dept Phys, Beijing 100871, Peoples R China; [Liu, YX] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China; [Liu, YX] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
英文摘要: We study fluctuations of conserved charges including baryon number, electric charge, and strangeness as well as the correlations among these conserved charges in the 2 + 1 flavor Polyakov-Nambu-Jona-Lasinio model at finite temperature. The calculated results are compared with those obtained from recent lattice calculations performed with an improved staggered fermion action at two values of the lattice cutoff with almost physical up and down quark masses and a physical value for the strange quark mass. We find that our calculated results are well consistent with those obtained in lattice calculations except for some quantitative differences for fluctuations related with strange quarks. Our calculations indicate that there is a pronounced cusp in the ratio of the quartic to quadratic fluctuations of baryon number, i.e. chi(B)(4)/chi(B)(2), at the critical temperature during the phase transition, which confirms that chi(B)(4)/chi(B)(2) is a useful probe of the deconfinement and chiral phase transition.
资助者: National Natural Science Foundation of China[10425521, 10675007, 10935001]; Major State Basic Research Development Program[G2007CB815000]; China Postdoctoral Science Foundation[20090460534]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000274002800039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5188
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Fu, Wei-jie,Liu, Yu-xin,Wu, Yue-Liang. Fluctuations and correlations of conserved charges in QCD at finite temperature with effective models[J]. PHYSICAL REVIEW D,2010,81(1):-.
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