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相关论文: Delineating the properties of neutron star matter …

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The properties of dense QCD matter are delineated through the construction of equations of state which should be consistent with QCD calculations in the low and high density limits, nuclear laboratory experiments, and the neutron star…

高能天体物理现象 · 物理学 2019-09-04 Toru Kojo

We discuss cold dense QCD by examining constraints from neutron stars, nuclear experiments, and QCD calculations at low and high baryon density. The two solar mass constraint and suggestive small radii (10~13 km) of neutron stars constrain…

高能天体物理现象 · 物理学 2017-02-28 Toru Kojo

We delineate the properties of dense QCD matter through equations of state constrained by the neutron star observations. The two solar mass constraint, the radius constraint of 11-13 km, and the causality constraint on the speed of sound,…

核理论 · 物理学 2017-12-19 Toru Kojo

We delineate the properties of QCD matter at baryon density n_B=1-10n_0 (n_0: nuclear saturation density), through the construction of neutron star equations of state that satisfy the neutron star mass-radius constraints as well as physical…

高能物理 - 唯象学 · 物理学 2016-11-23 Toru Kojo , Philip D. Powell , Yifan Song , Gordon Baym

We review the equation of state of matter in neutron stars from the solid crust through the liquid nuclear matter interior to the quark regime at higher densities. We focus in detail on the question of how quark matter appears in neutron…

高能天体物理现象 · 物理学 2018-08-06 Gordon Baym , Tetsuo Hatsuda , Toru Kojo , Philip D. Powell , Yifan Song , Tatsuyuki Takatsuka

Neutron stars are cosmic laboratories to study dense matter in Quantum Chromodynamics (QCD). The observable mass-radius relations of neutron stars are determined by QCD equations of state, and can reflect the properties of QCD phase…

核理论 · 物理学 2021-05-04 Toru Kojo

In this conference-proceedings contribution, we review recent advances in placing model-independent constraints on the properties of cold and dense QCD matter inside neutron stars. In addition to introducing new bounds for the Equation of…

高能天体物理现象 · 物理学 2019-04-03 Eemeli Annala , Tyler Gorda , Aleksi Kurkela , Joonas Nättilä , Aleksi Vuorinen

The equation of State for dense matter is studied with color molecular dynamics, in which hadron matter and quark matter are automatically distinguished only from quark color state. The quark-quark interactions are optimized to be…

核理论 · 物理学 2024-02-20 Nobutoshi Yasutake , Toshiki Maruyama

We use the holographic V-QCD models to analyse the physics of dense QCD and neutron stars. Accommodating lattice results for thermodynamics of QCD enables us to make generic predictions for the Equation of State (EoS) of the quark matter…

高能物理 - 唯象学 · 物理学 2019-03-27 Niko Jokela , Matti Jarvinen , Jere Remes

Recent observations of neutron stars, combined with causality, thermodynamic stability, and nuclear constraints, indicate a rapid stiffening of QCD matter at densities slightly above nuclear saturation density ($n_0 \simeq 0.16\,{\rm…

核理论 · 物理学 2025-06-16 Toru Kojo

We discuss the 3-window modeling of cold, dense QCD matter equations of state at density relevant to neutron star properties. At low baryon density, n_B < ~ 2n_s (n_s: nuclear saturation density), we utilize purely hadronic equations of…

高能物理 - 唯象学 · 物理学 2016-04-20 Toru Kojo

We investigate the hadron-quark phase transition in cold neutron stars in light of (i) the observed limits on the maximum-mass of heavy pulsars, (ii) constraints on the tidal properties inferred from the gravitational waves emitted in…

高能天体物理现象 · 物理学 2020-09-11 German Malfatti , Milva G. Orsaria , Ignacio F. Ranea-Sandoval , Gustavo A. Contrera , Fridolin Weber

The behavior of QCD at high baryon density and low temperature is crucial to understanding the properties of neutron stars and gravitational waves emitted during their mergers. In this paper we study small systems of baryons in periodic…

核理论 · 物理学 2018-09-05 Stefano Gandolfi , Joseph Carlson , Alessandro Roggero , Joel Lynn , Sanjay Reddy

The density in the core of neutron stars can reach values of about 5 to 10 times nuclear matter saturation density. It is, therefore, a natural assumption that hadrons may have dissolved into quarks under such conditions, forming a hybrid…

核理论 · 物理学 2016-02-17 S. Schramm , V. Dexheimer , R. Negreiros

At very large densities and/or temperatures a quark-hadron phase transition is expected to take place. Simulations of QCD on lattice at zero baryon density indicate that the transition occurs at $T_c \sim 150-170$ MeV. The calculations…

核理论 · 物理学 2007-05-23 S. C. Phatak , P. K. Sahu

The study of neutron stars, or more general compact stars, is a topic of central interest in nuclear astrophysics. Furthermore, neutron stars serve as the only physical systems whose properties can be used to infer information on cold and…

太阳与恒星天体物理 · 物理学 2013-07-19 S. Schramm , V. Dexheimer , R. Negreiros , T. Schürhoff , J. Steinheimer

Mean-field model quantum field theories of hadrons were traditionally developed to describe cold and dense nuclear matter and are by now very well constrained from the recent neutron star merger observations. We show that when augmented…

高能物理 - 唯象学 · 物理学 2023-03-08 Aman Abhishek , Sayantan Sharma

A new density dependent effective baryon-baryon interaction has been recently derived from the quark-meson-coupling (QMC) model, offering impressive results in application to finite nuclei and dense baryon matter. This self-consistent,…

核理论 · 物理学 2008-11-26 J. Rikovska-Stone , P. A. M. Guichon , H. H. Matevosyan , A. W. Thomas

We explore the possibility of formation of $\Delta$ baryons (1232 MeV) in neutron star matter in an effective chiral model within the relativistic mean-field framework. With variation in delta-meson couplings, consistent with the…

核理论 · 物理学 2019-01-28 Debashree Sen , T. K. Jha

Neutron stars and supernovae provide cosmic laboratories of highly compressed matter at supra nuclear saturation density which is beyond the reach of terrestrial experiments. The properties of dense matter is extracted by combining the…

核理论 · 物理学 2023-05-02 Kohsuke Sumiyoshi , Toru Kojo , Shun Furusawa
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