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相关论文: New class of hybrid EoS and Bayesian M-R data anal…

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We present a Bayesian analysis for a new class of realistic models of two-phase equations of state (EoS) for hybrid stars and demonstrate that the observation of a pair of high-mass twin stars would have a sufficient discriminating power to…

高能天体物理现象 · 物理学 2017-12-05 A. Ayriyan , D. E. Alvarez-Castillo , S. Benic , D. Blaschke , H. Grigorian , S. Typel

First-order phase transitions, like the liquid-gas transition, proceed via formation of structures such as bubbles and droplets. In strongly interacting compact star matter, at the crust-core transition, but also at the hadron-quark…

高能天体物理现象 · 物理学 2018-09-17 Vahagn Abgaryan , David Alvarez-Castillo , Alexander Ayriyan , David Blaschke , Hovik Grigorian

We present a physics-informed Bayesian analysis of equation of state constraints using observational data for masses, radii and tidal deformability of pulsars and a generic class of hybrid neutron star equation of state with color…

We introduce a family of equations of state (EoS) for hybrid neutron star (NS) matter that is obtained by a two-zone parabolic interpolation between a soft hadronic EoS at low densities and a stiff quark matter EoS with color…

核理论 · 物理学 2022-09-08 Oleksii Ivanytskyi , David Blaschke

In this contribution, we outline a new 2-phase description of the quark-nuclear matter hybrid equation of state that takes into account effects of phase space occupation (excluded volume) in both, the hadronic and the quark matter phases.…

核理论 · 物理学 2016-02-05 D. E. Alvarez-Castillo , M. A. R. Kaltenborn , D. Blaschke

The stellar configurations of quark stars are studied using perturbative QCD (pQCD) for the equation of state (EoS). The neutron star structures with equation of state obtained from Brussels-Montreal extended Skyrme interaction are also…

核理论 · 物理学 2023-08-01 Joydev Lahiri , D. N. Basu

We explore the connection between the stiffness of an hadronic equation of state (EoS) with a sharp phase transition to quark matter to its tidal deformability. For this we employ a hadronic relativistic mean field model with a…

高能天体物理现象 · 物理学 2020-05-20 Jan-Erik Christian , Jürgen Schaffner-Bielich

We perform an extensive study of equation of state (EoS) models featuring a phase transition from hadronic to deconfined quark matter in neutron star merger simulations. We employ three different hadronic EoSs, a constant speed of sound…

高能天体物理现象 · 物理学 2025-12-12 Sebastian Blacker , Andreas Bauswein

Considering the mass constraint from the resent pulsar observations, we study the properties of neutron stars including hyperons and quarks explicitly. Using the chiral quark-meson coupling model with relativistic Hartree-Fock…

核理论 · 物理学 2017-02-21 Tsuyoshi Miyatsu , Takahide Kambe , Koichi Saito

We construct a set of equations of state (EoS) of dense and hot matter with a 1st order phase transition from a hadronic system to a deconfined quark matter state. In this two-phase approach, hadrons are described using the relativistic…

高能天体物理现象 · 物理学 2019-08-27 Mateusz Cierniak , Tobias Fischer , Niels-Uwe Bastian , Thomas Klaehn , Marc Salinas

The equation of state (EoS) for neutron stars is a crucial topic in astrophysics, nuclear physics, and quantum chromodynamics (QCD), influencing their structure, stability, and observable properties. This review classifies EoS models into…

核理论 · 物理学 2025-07-08 Zuhua Ji , Jiarui Chen , Yan Chen

We present a hybrid equation of state (EoS) for dense matter in which a nuclear matter phase is described within the Dirac-Brueckner-Hartree-Fock (DBHF) approach and a two-flavor quark matter phase is modelled according to a recently…

核理论 · 物理学 2008-11-26 D. B. Blaschke , D. Gomez Dumm , A. G. Grunfeld , T. Klahn , N. N. Scoccola

We introduce a family of equations of state (EoS) for hybrid neutron star (NS) matter that is obtained by a two-zone parabolic interpolation between a soft hadronic EoS at low densities and a set of stiff quark matter EoS at high densities…

高能天体物理现象 · 物理学 2022-02-18 A. Ayriyan , D. Blaschke , A. G. Grunfeld , D. Alvarez-Castillo , H. Grigorian , V. Abgaryan

A two-phase description of the quark-nuclear matter hybrid equation of state that takes into account the effect of excluded volume in both the hadronic and the quark matter phases is introduced. The nuclear phase manifests a reduction of…

高能天体物理现象 · 物理学 2017-10-04 Mark Alexander Randolph Kaltenborn , Niels-Uwe Friedrich Bastian , David Bernhard Blaschke

The potential hadron-to-quark phase transition in neutron stars has not been fully understood as the property of cold, dense, and strongly interacting matter cannot be theoretically described by the first-principle perturbative…

核理论 · 物理学 2025-05-01 Ronghao Li , Sophia Han , Zidu Lin , Lingxiao Wang , Kai Zhou , Shuzhe Shi

The stable configurations of non-rotating and rotating hybrid stars composed of colour superconducting quark matter core are constructed using several equations of state (EOSs). We use a set of diverse EOSs for the nuclear matter which…

高能天体物理现象 · 物理学 2010-04-06 B. K. Agrawal

The hadron-quark phase transition in the core of heavy neutron star (NS) has been studied. For the hadronic sector, we have used the lowest-order constraint variational method by employing $ AV_{18} $, $ AV_{14}$, $ UV_{14}$, and Reid $ 68…

核理论 · 物理学 2025-09-12 S. Khanmohamadi , H. R. Moshfegh , S. Atashbar Tehrani

The possibility of discovering twin stars, two neutron stars (NSs) with the same mass but different radii, is usually studied in forward modelings by using a restricted number of NS matter equation of state (EOS) encapsulating a first-order…

高能天体物理现象 · 物理学 2025-11-10 Xavier Grundler , Bao-An Li

We construct a set of hyperonic equations of state (EoS) by assuming SU(3) symmetry within the baryon octet and by using a covariant density functional (CDF) theory approach. The low-density regions of our EoS are constrained by terrestrial…

核理论 · 物理学 2022-10-06 Han Rui Fu , Jia Jie Li , Armen Sedrakian , Fridolin Weber

The hadron-quark phase transition in core-collapse supernovae (CCSNe) has the potential to trigger explosions in otherwise nonexploding models. However, those hybrid supernova equations of state (EOS) shown to trigger an explosion do not…

太阳与恒星天体物理 · 物理学 2016-11-23 Oliver Heinimann , Matthias Hempel , Friedrich-Karl Thielemann
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