QCD equation of state from van der Waals Hadron Resonance Gas model and Holography

Jun 10, 2025, 2:20 PM
25m
Pan Hellenic

Pan Hellenic

Parallel session presentation Quark Matter and High Energy Heavy Ion Collisions Quark Matter and High Energy Heavy Ion Collisions:

Speaker

Tulio E Restrepo (University of Houston)

Description

We present an equation of state (EOS) that covers both the hadronic sector of the phase diagram as well as the deconfined sector, where quarks and gluons are the relevant degrees of freedom. This is accomplished through a switching function that enables the transition from the van de Waals Hadron Resonance Gas model, which describes the hadronic phase, to the
Einstein-Maxwell-Dilaton Holographic model, which describes the deconfined
phase.
The proposed switching function ensures a smooth transition in the crossover region, while preserving a first-order phase transition for $\mu_B \gtrsim 600$ MeV, where the holographic model predicts a critical point.
Furthermore, the EOS agrees with the state-of-the-art lattice
QCD thermodynamics.
Since this EOS spans a large range of temperatures and chemical potentials, it can be useful as an input in hydrodynamic simulations of heavy ion collisions.

Primary authors

Mr Musa R Khan (Department of Physics, University of Houston, Houston, TX 77204, USA) Ms Prachi Garella (Department of Physics, University of Houston, Houston, TX 77204, USA) Dr Joaquin Grefa (Center for Nuclear Research, Department of Physics, Kent State University, Kent, OH 44242 USA) Dr Mauricio Hippert (Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150, Rio de Janeiro, RJ, 22290-180, Brazil) Prof. Jorge Noronha (llinois Center for Advanced Studies of the Universe \& Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA) Prof. Claudia Ratti (Department of Physics, University of Houston, Houston, TX 77204, USA) Tulio E Restrepo (University of Houston) Prof. Romulo Rougemont (Instituto de Física, Universidade Federal de Goiás, Av. Esperança - Campus Samambaia, CEP 74690-900, Goiânia, Goiás, Brazil) Mr Yumu Yang (llinois Center for Advanced Studies of the Universe \& Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA)

Presentation materials