2010/09/23 by Teiji Kunihiro, T. Kunihiro, Yuki Minami +3 · 9 citations
Physics and Astronomy · #Baryon #Color superconductivity #Condensed matter physics #Critical point (mathematics) #Diquark #Dissipative system #High-Energy Particle Collisions Research #Mean field theory #Particle physics #Physics #Pulsars and Gravitational Waves Research #QCD matter #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark–gluon plasma #Soft modes #Strange matter #hep-ph #nucl-th
paper · pdf · doi:10.1143/ptps.186.447
published in Progress of Theoretical Physics Supplement 186, 447-454 (Oxford University Press) · 8 pages, 3 figures. Talk presented at Yukawa International workshop "New Frontiers in QCD 2010 --- Exotic Hadron Systems and Dense Matter ---" (NFQCD10), Jan. 18(Mon.)-Mar.19(Fri), 2010, Yukawa Institute for Theoretical Physics, Kyoto, Japan
arxiv created 2010/09/23 · openalex publication_date 2010/10/01 · arxiv updated 2011/03/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The mean-field level calculation shows that the QCD matter can have multiple critical points incorporating the color superconductivity under charge neutrality constraint due to the repulsive vector interaction; this actually implies that the QCD matter is very soft for a simultaneous formation of diquark and chiral condensates coupled with the baryonic density. Dynamical density fluctuations are analyzed as possible soft modes around the QCD critical point using dissipative relativistic fluid dynamics. It is found that the entropy fluctuation solely gets enhanced while the sound modes due to mechanical density fluctuations are strongly attenuated around the QCD CP, which may suggest a suppression or even total disappearance of Mach cone at the CP.