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相关论文: A dynamical, confining model and hot quark stars

200 篇论文

We study the response functions (chromo-electric susceptibilities) of quark-gluon plasma as a function of temperature in the presence of interactions. We consider two equations of state for hot QCD. The first one is fully perturbative, of…

高能物理 - 唯象学 · 物理学 2008-07-01 Vinod Chandra , Akhilesh Ranjan , V. Ravishankar

Recently, an instability due to the nonlinear coupling of p-modes to g-modes in tidally deformed neutron stars in coalescing binaries has been studied in some detail. The result is significant because it could influence the inspiral and…

高能天体物理现象 · 物理学 2018-01-31 Yixiao Zhou , Fan Zhang

The phenomena of deconfinement of hadronic matter into quark matter at high density, relevant to hybrid star (HS) cores, is studied in the present work. The effective chiral model describes the pure hadronic phase while for the quark phase…

核理论 · 物理学 2021-09-13 Debashree Sen , Naosad Alam , Gargi Chaudhuri

This work presents an effective model for strongly interacting matter and the QCD equation of state (EoS). The model includes both hadron and quark degrees of freedom and takes into account the transition of chiral symmetry restoration as…

高能物理 - 唯象学 · 物理学 2013-08-29 Philip Rau , Jan Steinheimer , Stefan Schramm , Horst Stöcker

First results from a fully self-consistent, temperature-dependent equation of state that spans the whole density range of neutron stars and supernova cores are presented. The equation of state (EoS) is calculated using a mean-field…

天体物理学 · 物理学 2008-11-26 W. G. Newton , J. R. Stone , A. Mezzacappa

Numerical simulations of compressible fluid flows require an equation of state (EOS) to relate the thermodynamic variables of density, internal energy, temperature, and pressure. A valid EOS must satisfy the thermodynamic conditions of…

计算物理 · 物理学 2009-11-11 Gary A. Dilts

It depends on the state of matter at supra-nuclear density to model pulsar's structure, which is unfortunately not certain due to the difficulties in physics. In cold quark matter at realistic baryon densities of compact stars (with an…

太阳与恒星天体物理 · 物理学 2009-12-08 X. Y. Lai

Nonperturbative equations of state (EoSs) for two and three quark flavors are constructed with the functional renormalization group (FRG) within a quark-meson model truncation augmented by vector mesons for low temperature and high density.…

高能物理 - 唯象学 · 物理学 2021-02-03 Konstantin Otto , Micaela Oertel , Bernd-Jochen Schaefer

Core-collapse simulations of massive stars are performed using the equation of state (EOS) based on the microscopic variational calculation with realistic nuclear forces. The progenitor models with the initial masses of $15M_\odot$,…

高能天体物理现象 · 物理学 2021-06-30 Ken'ichiro Nakazato , Kohsuke Sumiyoshi , Hajime Togashi

We have discussed dynamical behavior of strange quark matter components, in particular the effects of density dependent quark mass on the equation of state of strange quark matter. Dynamical masses of quarks have been computed within…

太阳与恒星天体物理 · 物理学 2015-06-03 G. H. Bordbar , B. Ziaei

We present a self-consistent model for the study of the structure of a neutron star in strong magnetic fields. Starting from a microscopic Lagrangian, this model includes the effect of the magnetic field on the equation of state, the…

高能天体物理现象 · 物理学 2015-06-23 Debarati Chatterjee , Thomas Elghozi , Jerome Novak , Micaela Oertel

We study the hadron-quark phase transition, taking into account the finite-size effects for neutron star matter. For the hadron phase, we adopt a realistic equation of state within the framework of the Brueckner-Hartree-Fock theory. For the…

高能天体物理现象 · 物理学 2018-07-25 Nobutoshi Yasutake , Huan Chen , Toshiki Maruyama , Toshitaka Tatsumi

The formation and evolution of stars depends on various physical aspects of stellar matter, including the equation of state (EOS) and transport properties. Although often dismissed as `ideal gas-like' and therefore simple, states occurring…

计算物理 · 物理学 2020-06-30 D. C. Swift , T. Lockard , M. Bethkenhagen , A. Kritcher , S. Hamel , D. Dearborn

Compact stars with significant high densities in their interiors can give rise to quark deconfined phases that can open a window for the study of strongly interacting dense nuclear matter. Recent observations on the mass of two pulsars, PSR…

核理论 · 物理学 2017-03-29 E. J. Ferrer

The observations of compact star inspirals from LIGO/Virgo provide a valuable tool to study the highly uncertain equation of state (EOS) of dense matter at the densities in which the compact stars reside. It is not clear whether the merging…

高能天体物理现象 · 物理学 2021-08-19 Zhiqiang Miao , Jin-Liang Jiang , Ang Li , Lie-Wen Chen

The equation of state (EOS) of the solar interior is accurately and smoothly determined from \textit{ab initio} simulations named quantum Langevin molecular dynamics (QLMD) in the pressure range of $58 \leq P \leq 4.6\times10^5$ Mbar at the…

太阳与恒星天体物理 · 物理学 2013-03-26 Jiayu Dai , Yong Hou , Jianmin Yuan

The equation of state (EOS) of materials at warm dense conditions poses significant challenges to both theory and experiment. We report a combined computational, modeling, and experimental investigation leveraging new theoretical and…

Bayesian methods are used to constrain the density dependence of the QCD Equation of State (EoS) for dense nuclear matter using the data of mean transverse kinetic energy and elliptic flow of protons from heavy ion collisions (HIC), in the…

高能物理 - 唯象学 · 物理学 2023-11-20 Manjunath Omana Kuttan , Jan Steinheimer , Kai Zhou , Horst Stoecker

In this work a density dependent quark model is revisited, its thermodynamic consistency checked and the stability window for absolutely stable quark matter obtained. The hypotheses of both pure quark matter with equal quark chemical…

高能物理 - 唯象学 · 物理学 2021-05-26 B. C. Backes , E. Hafemann , I. Marzolla , D. P. Menezes

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