Tuesday, July 17, 2012

1207.3547 (A. G. Alaverdyan et al.)

Energy Release Associated with Quark Phase Transition in Neutron Stars: Comparative Analysis of Maxwell and Glendenning Scenarios    [PDF]

A. G. Alaverdyan, G. B. Alaverdyan, Sh. R. Melikyan
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 \delta-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).
View original: http://arxiv.org/abs/1207.3547

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