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We consider the general conditions of quark droplets formation in high density neutron matter. The growth of the quark bubble (assumed to contain a sufficiently large number of particles) can be described by means of a Fokker-Planck…

天体物理学 · 物理学 2010-11-19 T. Harko , K. S. Cheng , P. S. Tang

We consider a variational 'crystalline' equation of state (EOS) that follows from nucleons that are chiral solitons with deep relativistic quark bound states. In this model conventional quark matter does not occur till a high density…

核理论 · 物理学 2024-02-29 Vikram Soni

The last few years have seen tremendous progress in the observation of the global properties of neutron stars (NSs), e.g. masses, radii and tidal deformabilities. Such properties provide information about possible phase transitions in the…

高能天体物理现象 · 物理学 2022-06-08 Rahul Somasundaram , Jérôme Margueron

In this conference proceeding, I discuss in detail the deconfinement to quark matter that takes place at large densities and/or temperatures. The first-order phase transition that is assumed to appear beyond a critical point gives rise to…

核理论 · 物理学 2018-01-26 Veronica Dexheimer

Possibility of structured mixed phases at first order phase transitions in neutron stars is re-examined by taking into account charge screening and surface effects. Transition from the hadron $npe$ phase to the quark phase is studied. Two…

核理论 · 物理学 2015-06-26 D. N. Voskresensky , M. Yasuhira , T. Tatsumi

A first order phase transition at high baryon density implies that a mixed phase can occupy a significant region of the interior of a neutron star. In this article we investigate the effect of a droplet phase on neutrino transport inside…

核理论 · 物理学 2009-10-31 Sanjay Reddy , George Bertsch , Madappa Prakash

Neutron star interiors provide the opportunity to probe properties of cold dense matter in the QCD phase diagram. Utilizing models of dense matter in accord with nuclear systematics at nuclear densities, we investigate the compatibility of…

高能天体物理现象 · 物理学 2020-06-01 Sophia Han , M. A. A. Mamun , S. Lalit , C. Constantinou , M. Prakash

We investigate the possibility of kaon condensation in the dense interior of neutron stars through the s--wave interaction of kaons with nucleons. We include nucleon--nucleon interactions by using simple parametrizations of realistic…

核理论 · 物理学 2009-10-22 V. Thorsson , M. Prakash , J. M. Lattimer

In this paper we investigate quark deconfinement in neutrons stars and their mergers, focusing on the effects of higher orders for the phase transition between hadronic and quark matter. The different descriptions we use to describe matter…

We develop our previous study of the transition to deconfined quark phase in neutron stars, including the interaction in the quark equation of state to the leading order in the perturbative expansion within the confinement density-dependent…

太阳与恒星天体物理 · 物理学 2015-06-24 A. Li , W. Zuo , G. -X. Peng

Core of neutron star consists of highly dense matter above normal nuclear density, where phase transitions is expected to take place. We review some phase transitions and recent topics of neutron stars.

核理论 · 物理学 2009-11-06 Masatomi Yasuhira

We investigate the constraints on the strength of first-order phase transitions in neutron star matter and its relation to the origin of nucleon mass. By combining the parity doublet model for the hadronic phase, the Nambu-Jona-Lasinio…

核理论 · 物理学 2025-07-03 Bikai Gao

For the past 20 years it had been thought that the coexistence phase of the confined hadronic and quark matter phases, assumed to be a first order transition, was strictly excluded from neutron stars. This, however, was due to a seemingly…

天体物理学 · 物理学 2007-05-23 Fridolin Weber , Norman K. Glendenning , Shouyong Pei

Recent observations of massive pulsars having masses of the order of two solar mass pose a new challenge for compact objects such as hybrid stars and neutron stars. Extensions of the bag model and the Nambu-Jona-Lasino model have been used…

核理论 · 物理学 2021-08-05 Salil Joshi , Sovan Sau , Soma Sanyal

As a neutron star spins down, its core density increase, changing the relative equilibrium concentration, and causing deconfinement phase transition as well. hadron matter are converted into quark matter in the interior, which enhances the…

高能天体物理现象 · 物理学 2015-03-19 Wei Wei , Xiao-Ping Zheng

The appearance of quark matter in the core of hybrid stars is a fundamental issue in such compact stars. The central density of these stars is sufficiently high such that nuclear matter undergoes a further change into other exotic phases…

高能天体物理现象 · 物理学 2015-06-17 Tomoki Endo

As rotating neutron stars slow down, the pressure and the density in the core region increase due to the decreasing centrifugal forces and phase transitions may occur in the center. We extract the analytic behavior near the critical angular…

天体物理学 · 物理学 2008-11-26 H. Heiselberg , M. Hjorth-Jensen

The mixed phase of quarks and hadrons which might exist in the dense matter encountered in the varying conditions of temperature and trapped neutrino fraction in proto-neutron stars is studied. The extent that the mixed phase depends upon…

核理论 · 物理学 2009-11-06 A. Steiner , M. Prakash , J. M. Lattimer

We calculate the energy release associated with a strong first-order phase transition, from normal phase N to an "exotic" superdense phase S, in a rotating neutron star. Such a phase transition, accompanied by a density jump rho_N -->…

天体物理学 · 物理学 2008-05-13 J. L. Zdunik , M. Bejger , P. Haensel , E. Gourgoulhon

We investigate the properties of nuclear matter at the first-order phase transitions such as liquid-gas phase transition and hadron-quark phase transition. As a general feature of the first-order phase transitions of matter consisting of…

核理论 · 物理学 2011-03-10 Toshiki Maruyama , Nobutoshi Yasutake , Toshitaka Tatsumi