Thermal Spectral Function and Deconfinement Temperature in Bulk Holographic AdS/QCD with Back Reaction of Bulk Vacuum

Abstract

Based on the IR-improved bulk holographic AdS/QCD model which provides a consistent prediction for the mass spectra of resonance scalar, pseudoscalar, vector and axial vector mesons, we investigate its finite temperature behavior. 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, 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 $T_c\simeq 150\pm 7$ MeV, which is consistent with the recent results from lattice QCD simulations.

13 pages, 5 figures

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Cited by in corpus (13)

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• Chiral Phase Transition and Meson Melting from AdS/QCD
• Heavy quarkonia spectroscopy at zero and finite temperature in bottom-up AdS/QCD
• Chiral phase transition and QCD phase diagram from AdS/QCD
• Thermal properties of light mesons from holography
• Chiral Phase Transition with 2+1 quark flavors in an improved soft-wall AdS/QCD Model
• Pion quasiparticles and QCD phase transitions at finite temperature and isospin density from holography
• A holographic study on QCD phase transition and phase diagram with two flavors
• Octet meson spectra and chiral phase diagram in the improved soft-wall AdS/QCD model
• Correlations between the deconfining and chiral transitions in holographic QCD
• Analysis of soft wall AdS / QCD potentials to obtain melting temperature of scalar hadrons
• Effects of beta function on mass and melting temperature for scalar glueballs in AdS/QCD models at finite temperature