Toward a holographic realization of the 2+1-flavor QCD phase structure

Abstract

We present a fully back-reacted Einstein--Maxwell--Dilaton--flavor model with dynamical light and strange sectors, calibrated to lattice QCD using a machine-learning--assisted spectral method. The model reproduces the 2+1-flavor equation of state and chiral dynamics with quantitative accuracy, and maps the Columbia plot with a tri-critical point at $m_s^{\mathrm{tri}}\simeq 21\text{MeV}$ and a critical mass $m_c\simeq 0.785\text{MeV}$, consistent with lattice results. At finite density, it yields a crossover-to-first-order transition and predicts a critical endpoint at $T_C=75.4\text{MeV}$ and ${\mu }_C=768\text{MeV}$, within the reach of heavy-ion experiments. These findings establish a unified holographic framework for the QCD phase structure across quark masses and baryon density, providing the first consistent and quantitative description of both deconfinement and chiral transitions within a single holographic model.

7 pages,5 figures

References in corpus (11)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• The equation of state in (2+1)-flavor QCD
• Equation of state and QCD transition at finite temperature
• The QCD Equation of State to $\mathcal{O}({\mu }_B^6)$ from Lattice QCD
• Thermodynamics and bulk viscosity of approximate black hole duals to finite temperature quantum chromodynamics
• A holographic critical point
• Critical point in the phase diagram of primordial quark-gluon matter from black hole physics
• Phase diagram of holographic thermal dense QCD matter with rotation
• Chiral phase transition of QCD with $N_f=2+1$ flavors from holography
• Chiral Phase Transition and Meson Melting from AdS/QCD
• Functional renormalization group study of the Quark-Meson model with $\omega$ meson