2005/06/09 by Masayasu Harada, Harada, Masayasu, Mannque Rho +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.hep-ph/0506092
Contribution to the proceedings of the YITP workshop on Non-equilibrium dynamics in the QCD phase transitions, February 22 - 24, 2005, YITP, Kyoto, Japan
arxiv created 2005/06/09 · openalex publication_date 2005/06/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the pion velocity near the critical temperature Tc of chiral symmetry restoration in QCD. Using chiral perturbation theory based on hidden local symmetry (HLS) as an effective field theory, where the chiral symmetry restoration is realized as the vector manifestation (VM), we show that the pion velocity for T → Tc is close to the speed of light, vπ(T) = 0.83 - 0.99 which is at variance with the sigma model result which predicts vπ(Tc) = 0. Our prediction on vπ(Tc) is compared with the value extracted from the recent RHIC data.