Entropy of expanding QCD matter

2006/07/31 by Tamás S. Bíró, Tamas S Biro, J. Zimányi +1 · 2 citations
Physics and Astronomy · #Coalescence (physics) #Computer science #Cosmology and Gravitation Theories #Crossover #Entropy (arrow of time) #Hadron #Hadronization #High-Energy Particle Collisions Research #Ideal gas #Lattice QCD #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Statistical physics #Strange matter #Theoretical physics #hep-ph

paper · pdf · doi:10.1016/j.physletb.2007.04.057

published as Phys.Lett.B650:193-196,2007 · 5 pages 4 eps figures LaTeX

arxiv created 2007/04/13 · openalex publication_date 2007/05/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Using the lattice QCD equation of state for an isentropically expanding fireball we follow the evolution of the effective number of particles in an ideal gas pV/T. This number reduces roughly to its third around the crossover temperature, which helps to circumvent the entropy obstacle inherent in quark coalescence models of the hadronization.

Citations

• Quark liberation and coalescence at CERN SPS
• Equation of state for distributed mass quark matter
• Thermodynamics at non-zero baryon number density: a comparison of lattice and hadron resonance gas model calculations
• Parton Coalescence and the Antiproton/Pion Anomaly at RHIC
• Generating new solutions for relativistic transverse flow at the softest point

Cited by

• Nuclear and quark matter at high temperature
• Pion and kaon spectra from distributed mass quark matter