Work

QCD Critical Points and Their Associated Soft Modes

Year: 2010

Type: article

Abstract: 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.

Source: Progress of Theoretical Physics Supplement

DOI: 10.1143/ptps.186.447

Authors: T. Kunihiro, Y. Minami, Z. Zhang

Institutions: Kyoto University, North China Electric Power University

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: Ministry of Education, Culture, Sports, Science and Technology

Award: G4138289811