Equation of state and chiral transition in soft-wall AdS/QCD with more realistic gravitational background

2019/09/16 by Zhen Fang, Fang, Zhen, Yue-Liang Wu +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Quantum Chromodynamics and Particle Interactions #Cosmology and Gravitation Theories

paper · pdf · doi:10.48550/arxiv.1909.06917

Abstract

We construct an improved soft-wall AdS/QCD model with a cubic coupling term of the dilaton and the bulk scalar field. The background fields in this model are solved from the Einstein-dilaton system with a nontrivial dilaton potential, which has been shown to be able to reproduce the equation of state from lattice QCD with two flavors. The chiral transition behaviors are investigated in the improved soft-wall AdS/QCD model with the solved gravitational background, and the crossover transition can be realized. Our study provides a possibility to address the deconfining and chiral phase transitions simultaneously in the bottom-up holographic framework.

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