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ENERGY RELEASE ASSOCIATED WITH QUARK PHASE TRANSITION IN NEUTRON STARS: COMPARATIVE ANALYSIS OF MAXWELL AND GLENDENNING SCENARIOS

2012/01/01 by A. G. Alaverdyan, ANI ALAVERDYAN, G. B. Alaverdyan +3
Physics and Astronomy · #Deconfinement #High-Energy Particle Collisions Research #Mixed phase #Nuclear matter #Observable #Phase (matter) #Phase transition #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #Quark #Quark model #Strange matter #astro-ph.SR #nucl-th

paper · pdf · doi:10.1142/s2010194512008112

published as Int. Journal of Modern Physics: Conf. Series, Vol.18 (2012) 1-9 · 9 pages, 5 figures

openalex publication_date 2012/01/01 · arxiv created 2012/07/15 · arxiv updated 2015/06/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29

Abstract

We study the compact stars internal structure and observable characteristics alterations due to the quark deconfinement phase transition. To proceed with, we investigate the properties of isospin- asymmetric nuclear matter in the improved relativistic mean-field (RMF) theory, including a scalar-isovector δ-meson effective field. In order to describe the quark phase, we use the improved version of the MIT bag model, in which the interactions between u, d and s quarks inside the bag are taken into account in the one-gluon exchange approximation. We compute the amount of energy released by the corequake for both cases of deconfinement phase transition scenarios, corresponding to the Maxwellian type ordinary first-order phase transition and the phase transition with formation of a mixed quark-hadron phase (Glendenning scenario).

Citations