Correlations between nuclear incompressibility, liquid-gas critical point, and quarkyonic transition
Year: 2025
Type: article
Abstract: We systematically probe different parametrizations of the attractive nuclear force based on real gas models to construct the nuclear matter equation of state. In each of the cases, the repulsion between nucleons is treated in the framework of excluded volume, and interaction parameters are fitted to the empirical properties of the nuclear ground state. We calculate the critical temperature T c and critical particle number density n c , and find that they are strongly correlated. Both are also correlated with the incompressibility K 0 in the nuclear ground state. We also include a quarkyonic matter phase in the quasiparticle description and investigate the relationships among K 0 , transition density to the quarkyonic phase, n tr , and corresponding peak in the speed of sound, v s , max 2 . At each density, the quark fraction is found by minimizing the energy density. We find that both n tr and v s , max 2 are negatively correlated with K 0 , n c , and T c .
Source: Physical Review C
Authors: Artemiy Lysenko, Mark I. Gorenstein, Tripp Moss, Roman Poberezhniuk, Volodymyr Vovchenko
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funder: Simons Foundation
OpenAlex ID: W4409015788