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题名: Chiral phase transition in the soft-wall model of AdS/QCD
作者: Chelabi, K ;  Fang, Z ;  Huang, M ;  Li, DN ;  Wu, YL
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2016
期号: 4, 页码:36
关键词: Gauge-gravity correspondence ;  AdS-CFT Correspondence ;  Phase Diagram of QCD
学科分类: Physics
DOI: http://dx.doi.org/10.1007/JHEP04(2016)036
通讯作者: Li, DN (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: We investigate the chiral phase transition in the soft-wall model of AdS/QCD at zero chemical potential for two-flavor and three-flavor cases, respectively. We show that there is no spontaneous chiral symmetry breaking in the original soft-wall model. After detailed analysis, we find that in order to realize chiral symmetry breaking and restoration, both profiles for the scalar potential and the dilaton field are essential. The scalar potential determines the possible solution structure of the chiral condensate, except the mass term, it takes another quartic term for the two-flavor case, and for the three-flavor case, one has to take into account an extra cubic term due to the t'Hooft determinant interaction. The profile of the dilaton field reflects the gluodynamics, which is negative at a certain ultraviolet scale and approaches positive quadratic behavior at far infrared region. With this set-up, the spontaneous chiral symmetry breaking in the vacuum and its restoration at finite temperature can be realized perfectly. In the two-flavor case, it gives a second order chiral phase transition in the chiral limit, while the transition turns to be a crossover for any finite quark mass. In the case of three-flavor, the phase transition becomes a first order one in the chiral limit, while above sufficient large quark mass it turns to be a crossover again. This scenario agrees exactly with the current understanding on chiral phase transition from lattice QCD and other effective model studies.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: GAUGED EXTENDED SUPERGRAVITY ;  EQUATION-OF-STATE ;  HOLOGRAPHIC QCD ;  FINITE-TEMPERATURE ;  SYMMETRY BREAKING ;  DYNAMICAL MODEL ;  FIELD-THEORIES ;  STRING THEORY ;  GLUON PLASMA ;  GRAVITY
收录类别: SCI
项目资助者: CAS-TWAS president fellowship ;  NSFC [11175251, 11275213, CRC 110] ;  DFG ;  CAS key project [KJCX2-EW-N01] ;  Youth Innovation Promotion Association of CAS ;  China Postdoctoral Science Foundation
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21702
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Chelabi, K,Fang, Z,Huang, M,et al. Chiral phase transition in the soft-wall model of AdS/QCD[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(4):36.
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