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We calculate static properties of non-rotating neutron stars (NS's) using a microscopic equation of state (EOS) for asymmetric nuclear matter. The EOS is computed in the framework of the Brueckner--Bethe--Goldstone many--body theory. We…

核理论 · 物理学 2007-05-23 M. Baldo , G. F. Burgio , I. Bombaci

The cold, dense matter equation of state (EoS) determines crucial global properties of neutron stars (NSs), including the mass, radius and tidal deformability. However, a one-dimensional (1D), cold, and $\beta$-equilibrated EoS is…

高能天体物理现象 · 物理学 2025-12-10 Zhenyu Zhu , Shuai Zha , Sophia Han

In this paper we apply the equation of state (EOS) of QCD at finite chemical potential and zero temperature proposed in H. S. Zong and W. M. Sun [Int. J. Mod. Phys. {\bf A23}, 3591 (2008)] to the study of properties of quark star. This EOS…

高能物理 - 唯象学 · 物理学 2015-03-17 Hua Li , Xin-Lian Luo , Yu Jiang , Hong-Shi Zong

We construct four equation of state (EoS) tables, tabulated over a range of temperatures, densities, and charge fractions, relevant for neutron star applications such as simulations of neutron star mergers. The EoS are computed from a…

核理论 · 物理学 2023-11-21 Mark G. Alford , Liam Brodie , Alexander Haber , Ingo Tews

NICER has enabled mass-radius inferences for pulsars using pulse profile modeling (PPM), providing constraints on the equation of state (EOS) of cold, dense matter. To date, PPM and EOS inference have been carried out as two separate steps,…

A statistical model for the equation of state (EOS) and the composition of supernova matter is presented with focus on the liquid-gas phase transition of nuclear matter. It consists of an ensemble of nuclei and interacting nucleons in…

核理论 · 物理学 2012-11-27 Matthias Hempel , Jürgen Schaffner-Bielich

A precise understanding of the equation of state (EOS) of dense and hot matter is key to modeling relativistic astrophysical environments, including core-collapse supernovae (CCSNe), protoneutron star (PNSs) evolution, and compact binary…

核理论 · 物理学 2020-12-08 Domenico Logoteta , Albino Perego , Ignazio Bombaci

Non-classical non-linear waves exist in dense gases for large specific heats at pressures and temperatures of the order of critical point values. These waves behave precisely opposite to the classical non-linear waves, with inverted…

流体动力学 · 物理学 2025-02-14 Ramesh Kolluru , S. V. Raghurama Rao , G. N. Sekhar

Differences in the equation of state (EOS) of dense matter translate into differences in astrophysical simulations and their multi-messenger signatures. Thus, extending the number of EOSs for astrophysical simulations allows us to probe the…

核理论 · 物理学 2019-08-21 A. S. Schneider , C. Constantinou , B. Muccioli , M. Prakash

An extended set of binary neutron star (NS) merger simulations is performed with an approximative conformally flat treatment of general relativity to systematically investigate the influence of the nuclear equation of state (EoS), the…

天体物理学 · 物理学 2009-11-11 R. Oechslin , H. -T. Janka , A. Marek

The $f$-electron materials have many unique properties under pressure, thus of great interest in high-pressure physics and related industrial fields. However, the $f$-electrons pose a substantial challenge to simulations since the electron…

强关联电子 · 物理学 2024-10-15 Bei-Lei Liu , Yue-Chao Wang , Xing-Yu Gao , Hai-Feng Liu , Hai-Feng Song

Recently, in Malik23, a dataset of several EoS for purely nucleonic stellar matter based on a non-linear RMF model prescription, and constrained to properties of nuclear matter, to state-of-the-art chiral effective field theory calculations…

核理论 · 物理学 2024-09-25 Tuhin Malik , Helena Pais , Constança Providência

We perform a Bayesian inference of the equation of state (EOS) of cold dense matter within a density-dependent relativistic mean-field (DD-RMF) model. An explicit inverse-mapping procedure reconstructs the density-dependent couplings from a…

核理论 · 物理学 2026-03-09 Wen-Jie Xie , Cheng-Jun Xia

Modeling the internal structure of self-gravitating solid and liquid bodies presents a challenge, as existing approaches are often limited to either overly simplistic constant-density approximations or more complex numerical equations of…

地球与行星天体物理 · 物理学 2025-07-31 Bartosz Żbik , Andrzej Odrzywołek

We report accurate measurements of the equation of state (EOS) of cubic boron nitride by x-ray diffraction up to 160 GPa at 295 K and 80 GPa in the range 500-900 K. Experiments were performed on single-crystals embedded in a…

其他凝聚态物理 · 物理学 2016-08-14 Frédéric Datchi , Agnès Dewaele , Yann Le Godec , Paul Loubeyre

With ongoing advancements in nuclear theory and experimentation, together with a growing body of neutron star (NS) observations, a wealth of information on the equation of state (EOS) for matter at extreme densities has become accessible.…

高能天体物理现象 · 物理学 2025-07-18 Bhaskar Biswas , Stephan Rosswog

We utilize the now substantial amount of astrophysical observations of neutron stars (NSs), along with perturbative quantum chromodynamics (pQCD) calculations at high density, to directly constrain the NS equation of state (EOS). To this…

高能天体物理现象 · 物理学 2025-06-24 Iuliu Cuceu , Sandra Robles

The validity of the widely used linear mixing approximation for the equations of state (EOS) of planetary ices is investigated at pressure-temperature conditions typical for the interior of Uranus and Neptune. The basis of this study are ab…

In a quasi-particle model of QCD matter at finite temperature with thermal masses for quarks and gluons from hard thermal loops, the equation of state (EOS) can be described by an effective temperature dependence of the strong coupling…

高能物理 - 唯象学 · 物理学 2023-12-12 Feng-Lei Liu , Xiang-Yu Wu , Shanshan Cao , Guang-You Qin , Xin-Nian Wang

Collecting the complete data set of previous experiments on periclase, covering a pressure and temperature range of 0-141.8 GPa and 100-3031 K respectively, the first comprehensive P-V-T description of MgO is presented comprising all…

地球物理 · 物理学 2010-02-24 Jozsef Garai , Jiuhua Chen , Gabor Telekes