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High Energy Physics - Phenomenology, hep-ph
Abstract:
We explore the phase structure of Quantum Chromodynamics (QCD) with two
dynamical quark flavors at finite temperature and baryon chemical potential,
employing the non-perturbative gauge/gravity duality approach. Our
gravitational model is tailored to align with state-of-the-art lattice data
regarding the thermal properties of multi-flavor QCD. Following a rigorous
parameter calibration to match equations of state and the QCD trace anomaly at
zero chemical potential derived from cutting-edge lattice QCD simulations, we
investigate thermodynamic quantities and order parameters. We predict the
location of the critical endpoint (CEP) at $(\mu_{\text{CEP}},
T_{\text{CEP}})=(219,182)$ MeV at which a line of first-order phase transitions
terminate. We compute critical exponents associated with the CEP and find that
they almost coincide with the critical exponents of the quantum 3D Ising model.
