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Related papers: Hybrid protoneutron stars within a static approach

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We review the composition and the equation of state of the hyperonic core of neutron stars at finite temperature within a relativistic mean-field approach. We make use of the new FSU2H* model, which is built upon the FSU2H scheme by…

Nuclear Theory · Physics 2022-11-30 Hristijan Kochankovski , Angels Ramos , Laura Tolos

We investigate the equation of state(EoS) and the effect of the hadron-quark phase transition of strong interaction matter in compact stars. The hadron matter is described with the relativistic mean field theory,and the quark matter is…

High Energy Physics - Phenomenology · Physics 2018-01-31 Zhan Bai , Huan Chen , Yu-xin Liu

The effect of model parameters in the equation of state for quark matter on the magnitude of the maximum mass of hybrid stars is examined. Quark matter is described in terms of the extended MIT bag model including corrections for one-gluon…

Nuclear Theory · Physics 2019-03-20 G. B. Alaverdyan , Yu. L. Vartanyan

We investigate the properties of the hadron-quark mixed phase in compact stars using a Brueckner-Hartree-Fock framework for hadronic matter and the MIT bag model for quark matter. We find that the equation of state of the mixed phase is…

Nuclear Theory · Physics 2009-11-13 Toshiki Maruyama , Satoshi Chiba , Hans-Josef Schulze , Toshitaka Tatsumi

We investigate binary neutron star (BNS) mergers using general-relativistic numerical simulations with hadronic and hybrid equations of state (EOSs), incorporating the latest observations and theoretical constraints. We address two viable…

High Energy Astrophysical Phenomena · Physics 2025-09-16 Sudipta Hensh , Yong-Jia Huang , Toru Kojo , Luca Baiotti , Kentaro Takami , Shigehiro Nagataki , Hajime Sotani

We describe charge-neutral neutron star matter in $\beta-$equilibrium using hybrid equations of state, where a first-order phase transition from hadronic to quark matter is realized. The hadronic matter is described in a model-independent…

Nuclear Theory · Physics 2020-07-21 Márcio Ferreira , Renan Câmara Pereira , Constança Providência

We explore protoneutron star matter in the framework of cold and dense QCD using the state-of-the-art perturbative equation of state including neutrinos fixed by a lepton fraction that is appropriate for this environment. Furthermore, we…

High Energy Physics - Phenomenology · Physics 2018-07-10 J. C. Jiménez , E. S. Fraga

I review holographic models for (dense and cold) nuclear matter, neutron stars, and their mergers. I start by a brief general discussion on current knowledge of cold QCD matter and neutron stars, and go on discussing various approaches to…

High Energy Physics - Phenomenology · Physics 2022-07-13 Matti Jarvinen

We compute models for the equation of state (EoS) of the matter in the cores of hybrid stars. Hadronic matter is treated in the non-linear relativistic mean-field approximation, and quark matter is modeled by three-flavor local and…

Nuclear Theory · Physics 2017-09-06 G. A. Contrera , M. Orsaria , I. F. Ranea-Sandoval , F. Weber

We investigate radial oscillations of pure neutron stars and hybrid stars, employing equations of state of nuclear matter from Brueckner-Hartree-Fock theory, and of quark matter from the Dyson-Schwinger quark model, performing a Gibbs…

Nuclear Theory · Physics 2021-05-12 Ting-Ting Sun , Zi-Yue Zheng , Huan Chen , G. Fiorella Burgio , Hans-Josef Schulze

We discuss the properties of the hadron-quark mixed phase in compact stars using a realistic equation of state of hyperonic matter and the MIT bag model. We find that the equation of state of the mixed phase is similar to that given by the…

Nuclear Theory · Physics 2008-11-26 Toshiki Maruyama , Satoshi Chiba , Hans-Josef Schulze , Toshitaka Tatsumi

Particles with strangeness content are predicted to populate dense matter, modifying the equation of state of matter inside neutron stars as well as their structure and evolution. In this work, we show how the modeling of strangeness…

Nuclear Theory · Physics 2019-06-12 R. O. Gomes , Prasanta Char , S. Schramm

Explosive astrophysical systems, such as supernovae or compact star binary mergers, provide conditions where strange quark matter can appear. The high degree of isospin asymmetry and temperatures of several MeV in such systems may cause a…

High Energy Astrophysical Phenomena · Physics 2014-11-20 I. Sagert , T. Fischer , M. Hempel , G. Pagliara , J. Schaffner-Bielich , F. -K. Thielemann , M. Liebendörfer

We study the hadron-quark mixed phase, which may occur in the interior of neutron stars. The relativistic mean-field model is employed to describe the hadronic phase, while the Nambu--Jona-Lasinio model is used for the quark phase. We…

Nuclear Theory · Physics 2019-06-20 X. H. Wu , H. Shen

We study the thermodynamics of two flavor color superconducting (2SC) quark matter within a nonlocal chiral quark model, using both instantaneous and covariant nonlocal interactions. For applications to compact stars, we impose conditions…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. G. Grunfeld , J. Berdermann , D. B. Blaschke , T. Klahn , D. Gomez Dumm , N. N. Scoccola

This study investigates the radial oscillations of hybrid neutron stars, characterized by a composition of hadronic external layers and a quark matter core. Utilizing a density-dependent relativistic mean-field model that incorporates…

We propose a relativistic model of hybrid star admitting conformal symmetry considering quark matter and baryonic matter as two different fluids. We define interaction equations between the normal baryonic matter and the quark matter and…

General Relativity and Quantum Cosmology · Physics 2014-10-09 Koushik Chakraborty , Farook Rahaman , Arkopriya Mallick

We study hybrid stars considering the effects on stellar stability of the hadron-quark conversion speed at the sharp interface. The equation of state is constructed by combining a model-agnostic hadronic description with a constant speed of…

Nuclear Theory · Physics 2023-05-17 Germán Lugones , Mauro Mariani , Ignacio F. Ranea-Sandoval

We investigate fundamental quasiradial oscillations in slow-rotation approximation of pure and hybrid neutron stars, employing equations of state of nuclear matter from Brueckner-Hartree-Fock theory or the relativistic mean field model, and…

In the present work we use the modified versions of the MIT bag model, on which both a vector field and a self-interacting term are introduced, to obtain hot quark matter and to investigate the QCD phase diagram. We first analyze…

High Energy Physics - Phenomenology · Physics 2021-03-31 Luiz L. Lopes , Carline Biesdorf , K. D. Marquez , Debora P. Menezes