Hard-core deconfinement and soft-surface delocalization from nuclear to quark matter

2020/08/31 by Kenji Fukushima, Toru Kojo, Wolfram Weise · 2 citations
Physics and Astronomy · #Baryon #Deconfinement #High-Energy Particle Collisions Research #Nuclear matter #Nuclear physics #Nucleon #Particle physics #Physics #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #Quark #Strange matter #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.102.096017

published as Phys. Rev. D 102, 096017 (2020) · 14 pages, 12 figures; v2 published in PRD

openalex publication_date 2020/11/16 · arxiv created 2020/11/18 · arxiv updated 2020/11/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We propose a conceptual distinction between hard and soft realizations of deconfinement from nuclear to quark matter. In the high density region of hard deconfinement the repulsive hard cores of baryons overlap each other and bulk thermodynamics is dominated by the core properties that can be experimentally accessed in high-energy scattering experiments. We find that the equation of state estimated from a single baryon core is fairly consistent with those empirically known from neutron star phenomenology. We next discuss a novel concept of soft deconfinement, characterized by quantum percolation of quark wave functions, at densities lower than the threshold for hard deconfinement. We make a brief review of quantum percolation in the context of nuclear and quark matter and illustrate a possible scenario of quark deconfinement at high baryon densities.

Citations

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Cited by

• Shear Viscosity and Electrical Conductivity of Rotating Nuclear Medium in Hadron Resonance Gas and Nambu-Jona Lasinio Models
• Thermal quarks and gluon propagators in two-color dense QCD