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相关论文: Cold Atom Quantum Simulator for Dilute Neutron Mat…

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By using bare Argonne V4' (AV4'), V6' (AV6'), and V8' (AV8') nucleon-nucleon (NN) interactions respectively, the nuclear equations of state (EOSs) for neutron matter are calculated with the unitary correlation operator and high-momentum…

核理论 · 物理学 2020-12-04 Niu Wan , Takayuki Myo , Chang Xu , Hiroshi Toki , Hisashi Horiuchi , Mengjiao Lyu

In this work we calculate the total mass, radius, moment of inertia, and surface gravitational redshift for neutron stars using various equations of state (EOS). Modern meson-exchange potential models are used to evaluate the $G$-matrix for…

核理论 · 物理学 2009-10-28 L. Engvik , G. Bao , M. Hjorth-Jensen , E. Osnes , E. Oestaard

We theoretically propose an idea to use an ultracold Fermi gas as a quantum simulator for the study of the neutron-star equation of state (EoS) in the low-density region. Our idea is different from the standard quantum simulator that heads…

量子气体 · 物理学 2018-01-10 Pieter van Wyk , Hiroyuki Tajima , Daisuke Inotani , Akira Ohnishi , Yoji Ohashi

A central open problem in nuclear physics is the determination of a physically robust equation of state (EoS) for dense nuclear matter, which directly informs our understanding of the internal composition and macroscopic properties of…

核理论 · 物理学 2025-12-08 I. Stergakis , Th. Diakonidis , Ch. C. Moustakidis

Theoretical models of the equation of state (EOS) of neutron-star matter (starting with the crust and ending at the densest region of the stellar core) are reviewed. Apart from a broad set of baryonic EOSs, strange quark matter, and even…

天体物理学 · 物理学 2015-06-24 P. Haensel

A metamodeling for the nucleonic equation of state (EOS), inspired from a Taylor expansion around the saturation density of symmetric nuclear matter, is proposed and parameterized in terms of the empirical parameters. The present knowledge…

核理论 · 物理学 2018-03-07 J. Margueron , R. Hoffmann Casali , F. Gulminelli

The nuclear matter parameters define the nuclear equation of state (EoS), they appear as coefficients of expansion around the saturation density of symmetric and asymmetric nuclear matter. We review their correlations with several…

核理论 · 物理学 2021-05-26 B. K. Agrawal , Tuhin Malik , J. N. De , S. K. Samaddar

We study the equation of state (EOS) of nuclear matter at subnuclear density in a Virial expansion for a nonideal gas. The gas consists of neutrons, protons, alpha particles, and 8980 species of nuclei with $A \ge 12$ and masses from the…

核理论 · 物理学 2010-10-27 G. Shen , C. J. Horowitz , S. Teige

We study quasinormal $f-$mode oscillations in neutron star(NS) interiors within the linearized General Relativistic formalism. We utilize approximately 9000 nuclear Equations of State (EOS) using spectral representation techniques,…

高能天体物理现象 · 物理学 2024-04-30 Debanjan Guha Roy , Tuhin Malik , Swastik Bhattacharya , Sarmistha Banik

The dense matter equation of state (EOS) determines neutron star (NS) structure but can be calculated reliably only up to one to two times the nuclear saturation density, using accurate many-body methods that employ nuclear interactions…

核理论 · 物理学 2018-06-27 Ingo Tews , Joseph Carlson , Stefano Gandolfi , Sanjay Reddy

We generate a new complete equation of state (EOS) of nuclear matter for a wide range of temperatures, densities, and proton fractions ready for use in astrophysical simulations of supernovae and neutron star mergers. Our previous two…

太阳与恒星天体物理 · 物理学 2015-03-17 G. Shen , C. J. Horowitz , S. Teige

Because of the development of many-body theories of nuclear matter, the long-standing, open problem of the equation of state (EOS) of dense matter may be understood in the near future through the confrontation of theoretical calculations…

核理论 · 物理学 2020-12-02 A. Li , Z. -Y. Zhu , E. -P. Zhou , J. -M. Dong , J. -N. Hu , C. -J. Xia

Material expelled from binary neutron star (BNS) mergers can harbor r-process nucleosynthesis and power a Kilonova (KN), both intimately related to the astrophysical conditions of the ejection. In turn such conditions indirectly depend on…

高能天体物理现象 · 物理学 2025-02-24 Giacomo Ricigliano , Maximilian Jacobi , Almudena Arcones

We study the effects of isovector-scalar meson $\delta$ on the equation of state (EOS) of neutron star matter in strong magnetic fields. The EOS of neutron-star matter and nucleon effective masses are calculated in the framework of…

核理论 · 物理学 2009-11-11 F. X. Wei , G. J. Mao , C. M. Ko , L. S. Kisslinger , H. Stoecker , W. Greiner

Neutron stars are regarded as natural laboratories for the study of dense strong interaction matter. The equation of state (EoS) of dense matter computed in flat spacetime is used to predict the structure of neutron stars by solving the…

广义相对论与量子宇宙学 · 物理学 2022-10-27 Jianing Li , Tao Guo , Jiaxing Zhao , Lianyi He

The current observational properties of neutron stars have not definitively ruled out the possibility of dark matter. In this study, we primarily focus on exploring correlations between the dark matter model parameters and different neutron…

高能物理 - 唯象学 · 物理学 2023-08-02 Prashant Thakur , Tuhin Malik , Arpan Das , T. K. Jha , Constança Providência

We calculate total masses and radii of neutron stars (NS) for pure neutron matter and nuclear matter in beta-equilibrium. We apply a relativistic nuclear matter equation of state (EOS) derived from Dirac-Brueckner-Hartree-Fock (DBHF)…

核理论 · 物理学 2009-11-11 Plamen G. Krastev , Francesca Sammarruca

The uncertainties in neutron star (NS) radii and crust properties due to our limited knowledge of the equation of state (EOS) are quantitatively analysed. We first demonstrate the importance of a unified microscopic description for the…

太阳与恒星天体物理 · 物理学 2016-10-12 M. Fortin , C. Providencia , A. R. Raduta , F. Gulminelli , J. L Zdunik , P. Haensel , M. Bejger

A considerable effort has been dedicated recently to the construction of generic equations of state (EOSs) for matter in neutron stars. The advantage of these approaches is that they can provide model-independent information on the interior…

广义相对论与量子宇宙学 · 物理学 2023-07-10 Carlo Musolino , Christian Ecker , Luciano Rezzolla

I have systematically investigated the equations of state (EOSs) in nuclear statistical equilibrium under thermodynamic conditions relevant for core collapse of massive stars by varying the bulk properties of nuclear matter, the mass data…

核理论 · 物理学 2018-12-07 Shun Furusawa