Chiral phase transition in the soft-wall model of AdS/QCD

doi:http://dx.doi.org/10.1007/JHEP04(2016)036

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	Chiral phase transition in the soft-wall model of AdS/QCD
	Chelabi, K 2; Fang, Z ; Huang, M 1,4; Li, DN ; Wu, YL
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2016
期号	4 页码:36
关键词	Gauge-gravity correspondence GAUGED EXTENDED SUPERGRAVITY AdS-CFT Correspondence EQUATION-OF-STATE Phase Diagram of QCD HOLOGRAPHIC QCD FINITE-TEMPERATURE SYMMETRY BREAKING DYNAMICAL MODEL FIELD-THEORIES STRING THEORY GLUON PLASMA GRAVITY
DOI	http://dx.doi.org/10.1007/JHEP04(2016)036
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.
学科主题	Physics
语种	英语
资助机构	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
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23060]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Ecole Normale Super Kouba, Lab Particle Phys & Stat Phys, BP 92, Algiers 16050, Algeria 5.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	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.
APA	Chelabi, K,Fang, Z,Huang, M,Li, DN,&Wu, YL.(2016).Chiral phase transition in the soft-wall model of AdS/QCD.JOURNAL OF HIGH ENERGY PHYSICS(4),36.
MLA	Chelabi, K,et al."Chiral phase transition in the soft-wall model of AdS/QCD".JOURNAL OF HIGH ENERGY PHYSICS .4(2016):36.