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Chelabi, K2; Fang, Z; Huang, M3,4; Li, DN; Wu, YL
Chiral phase transition in the soft-wall model of AdS/QCD
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
Language英语
KeywordGauge-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
AbstractWe 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.
2016
Issue4Pages:36
Subject AreaPhysics
DOIhttp://dx.doi.org/10.1007/JHEP04(2016)036
Indexed BySCI
Funding OrganizationCAS-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
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23060
Collection理论物理所科研产出_SCI论文
Affiliation1.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Ecole Normale Super Kouba, Lab Particle Phys & Stat Phys, BP 92, Algiers 16050, Algeria
4.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
Recommended Citation
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.
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