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Chinese Physics C> 2016, Vol. 40> Issue(6) : 063101 DOI: 10.1088/1674-1137/40/6/063101

Finite temperature effect in infrared-improved AdS/QCD model with back reaction of bulk vacuum

  • 1.

     Key Laboratory of Theoretical Physics(SKLTP), Beijing 100190, China

  • 2.

     Kavli Institute for Theoretical Physics China(KITPC), Beijing 100190, China

  • 3.

     Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China

  • 4.

     University of Chinese Academy of Sciences(UCAS), Beijing 100049, China

  • 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.
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  • References

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Ling-Xiao Cui, Zhen Fang and Yue-Liang Wu. Finite temperature effect in infrared-improved AdS/QCD model with back reaction of bulk vacuum[J]. Chinese Physics C, 2016, 40(6): 063101. doi: 10.1088/1674-1137/40/6/063101
Ling-Xiao Cui, Zhen Fang and Yue-Liang Wu. Finite temperature effect in infrared-improved AdS/QCD model with back reaction of bulk vacuum[J]. Chinese Physics C, 2016, 40(6): 063101.  doi: 10.1088/1674-1137/40/6/063101 shu
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Received: 2015-09-15
Revised: 2016-01-21
Fund

    Supported by National Nature Science Foundation of China (NSFC)(10975170, 10905084, 10821504), and Project of Knowledge Innovation Program (PKIP) of Chinese Academy of Science

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Finite temperature effect in infrared-improved AdS/QCD model with back reaction of bulk vacuum

    Corresponding author: Ling-Xiao Cui,
    Corresponding author: Zhen Fang,
    Corresponding author: Yue-Liang Wu,
  • 1. Key Laboratory of Theoretical Physics(SKLTP), Beijing 100190, China
  • 2. Kavli Institute for Theoretical Physics China(KITPC), Beijing 100190, China
  • 3. Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 4. University of Chinese Academy of Sciences(UCAS), Beijing 100049, China
  • Received Date: 2015-09-15
  • Accepted Date: 2016-01-21
  • Available Online: 2016-06-05
Fund Project:  Supported by National Nature Science Foundation of China (NSFC)(10975170, 10905084, 10821504), and Project of Knowledge Innovation Program (PKIP) of Chinese Academy of Science

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.

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