Finite temperature effect in infrared-improved AdS/QCD model with back reaction of bulk vacuum Supported by National Nature Science Foundation of China (NSFC)(10975170, 10905084, 10821504), and Project of Knowledge Innovation Program (PKIP) of Chinese Academy of Science

Cui, Ling-Xiao (Key Laboratory of Theoretical Physics (SKLTP), Beijing 100190, China) (Kavli Institute for Theoretical Physics China (KITPC), Beijing 100190, China) (Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China) (University of Chinese Academy of Sciences (UCAS), Beijing 100049, China) ; Fang, Zhen (Key Laboratory of Theoretical Physics (SKLTP), Beijing 100190, China) (Kavli Institute for Theoretical Physics China (KITPC), Beijing 100190, China) (Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China) (University of Chinese Academy of Sciences (UCAS), Beijing 100049, China) ; Wu, Yue-Liang (Key Laboratory of Theoretical Physics (SKLTP), Beijing 100190, China) (Kavli Institute for Theoretical Physics China (KITPC), Beijing 100190, China) (Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China) (University of Chinese Academy of Sciences (UCAS), Beijing 100049, China)

09 June 2016

Abstract: Based on an IR-improved soft-wall AdS/QCD model for mesons, which provides a consistent prediction for the mass spectra of resonance scalar, pseudoscalar, vector and axial-vector mesons, we investigate its finite temperature effect. By analyzing the spectral function of mesons and fitting it with a Breit-Wigner form, we perform an analysis for the critical temperature of mesons. The back-reaction effects of bulk vacuum are considered and the thermal mass spectral function of resonance mesons is calculated based on the back-reaction improved action. A reasonable melting temperature is found to be Tc ≈ 150 ± 7 MeV, which is consistent with the recent results from lattice QCD simulations.


Published in: Chinese Phys. C 40 (2016) 063101
Published by: Institute of Physics Publishing/Chinese Academy of Sciences
DOI: 10.1088/1674-1137/40/6/063101
arXiv: 1404.0761
License: CC-BY-3.0



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