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题名: Thermal mass spectra of vector and axial-vector mesons in predictive soft-wall AdS/QCD model
作者: Cui, LX ;  Takeuchi, S ;  Wu, YL
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2012
期号: 4, 页码:144
关键词: LIGHT-FRONT HOLOGRAPHY ;  QCD
学科分类: Physics
通讯作者: Cui, LX (reprint author), Chinese Acad Sci, Inst Theoret Phys, SKLTP, KITPC, Beijing 100190, Peoples R China.
部门归属: [Cui, Ling-Xiao; Takeuchi, Shingo; Wu, Yue-Liang] Chinese Acad Sci, Inst Theoret Phys, SKLTP, KITPC, Beijing 100190, Peoples R China
英文摘要: We extend the predictive soft-wall AdS/QCD model to a thermodynamic model by considering the black hole metric. A modified bulk vacuum expectation value and a modified coefficient for the quartic term in the bulk scalar potential are introduced to obtain a smooth dilaton solution for computing the spectral functions of the vector and axial-vector mesons. It is demonstrated that the peaks appearing in the spectral functions characterize the thermal mass spectra of vector and axial-vector mesons, where the location of the peak moves to a lower value and the width of the peak becomes wider when increasing the temperature. We observe that the peak disappears completely at the critical temperature around T-c = 200 MeV, which implies the deconfinement of quark and the restoration of chiral symmetry breaking. A numerical study by fitting the spectral function in terms of the Breit-Wigner form has been made to show how the peak dissolves quantitatively when the temperature is increased to the critical point.
资助者: National Science Foundation of China (NSFC) [10821504, 10975170]; Chinese Academy of Science
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000304148100070
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15123
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Cui, LX,Takeuchi, S,Wu, YL. Thermal mass spectra of vector and axial-vector mesons in predictive soft-wall AdS/QCD model[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(4):144.
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