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We propose a new analytical form of the quark-gluon plasma equation of state (EoS). This new EoS satisfies all qualitative features observed in the lattice QCD calculations and gives a good quantitative description of the lattice results in…

高能物理 - 唯象学 · 物理学 2011-06-15 Viktor V. Begun , Mark I. Gorenstein , Oleg A. Mogilevsky

The equation of state (EOS) for hot asymmetric nuclear matter which is constructed with the variational method starting from the Argonne v18 and Urbana IX nuclear forces is applied to spherically symmetric core-collapse supernovae (SNe). We…

核理论 · 物理学 2014-03-05 H. Togashi , M. Takano , K. Sumiyoshi , K. Nakazato

We use analytic perturbation theory to present a new approximate metric for a rigidly rotating perfect fluid source with equation of state (EOS) $\epsilon+(1-n)p=\epsilon_0$. This EOS includes the interesting cases of strange matter,…

广义相对论与量子宇宙学 · 物理学 2013-04-15 Javier E. Cuchí , Antonio Gil-Rivero , Alfred Molina , Eduardo Ruiz

An Equation of State (\textit{EoS}) closes the set of fluid equations. Although an ideal EoS with a constant \textit{adiabatic index} $\Gamma$ is the preferred choice due to its simplistic implementation, many astrophysical fluid…

天体物理仪器与方法 · 物理学 2015-08-19 B. Vaidya , A. Mignone , G. Bodo , S. Massaglia

An integrated Equation of State (EOS) and strength/pore-crush/damage model framework is provided for modeling near to source (near-field) ground-shock response, where large deformations and pressures necessitate coupling EOS with…

计算工程、金融与科学 · 计算机科学 2024-03-08 Kane C. Bennett , Alyson M. Stahl , Thomas R. Canfield , Garrett G. Euler

A modification of an embedded-atom method (EAM)-type potential is proposed for a quantitative description of equilibrium and non-equilibrium properties of metal systems within the molecular-dynamics framework. The modification generalizes…

介观与纳米尺度物理 · 物理学 2021-07-09 Alexey Verkhovtsev , Andrei V. Korol , Gennady Sushko , Stefan Schramm , Andrey V. Solov'yov

Previous work has shown that the one-dimensional (1D) inviscid compressible flow (Euler) equations admit a wide variety of scale-invariant solutions (including the famous Noh, Sedov, and Guderley shock solutions) when the included equation…

流体动力学 · 物理学 2018-04-18 Scott D. Ramsey , Emma M. Schmidt , Zachary M. Boyd , Jennifer F. Lilieholm , Roy S. Baty

Global evolution of the matter in relativistic collisions of heavy nuclei and the resulting global freeze-out parameters are analyzed in a wide range of incident energies 2.7 GeV $\le \sqrt{s_{NN}}\le$ 39 GeV. The analysis is performed…

核理论 · 物理学 2015-06-16 Yu. B. Ivanov

In this paper, a recently developed analytical equation of state (EOS) is used to investigate the bulk modulus of compressed liquid cesium and to locate common compression factor and the bulk modulus quiescence point(s). This EOS is applied…

材料科学 · 物理学 2007-05-23 M. H. Ghatee , M. Bahadori

Numerous models of neutron star (NS) equation of state (EoS) exist based on different superdense-matter physics approaches. Nevertheless, some NS properties show universal (EoS-independent) relations. Here, we propose a novel class of such…

高能天体物理现象 · 物理学 2024-08-02 Dmitry D. Ofengeim , Peter S. Shternin , Tsvi Piran

We present sets of equation of state (EOS) of nuclear matter including hyperons using an SU_f(3) extended relativistic mean field (RMF) model with a wide coverage of density, temperature, and charge fraction for numerical simulations of…

核理论 · 物理学 2008-11-26 C. Ishizuka , A. Ohnishi , K. Tsubakihara , K. Sumiyoshi , S. Yamada

Two microscopic models, UrQMD and QGSM, are used to extract the effective equation of state (EOS) of locally equilibrated nuclear matter produced in heavy-ion collisions at energies from 11.6 AGeV to 160 AGeV. Analysis is performed for the…

An anisotropic equation of state (EOS) is proposed for the accurate extrapolation of high-pressure shock Hugoniot (anisotropic and isotropic) states to other thermodynamic (anisotropic and isotropic) states for a shocked carbon-fibre epoxy…

材料科学 · 物理学 2015-05-14 Alexander A. Lukyanov

Platinum is widely used as a pressure calibration standard. However, the established thermal EOS has uncertainties, especially in the high $P$-$T$ range. We use density functional theory to calculate the thermal equation of state of…

材料科学 · 物理学 2008-07-29 Tao Sun , Koichiro Umemoto , Zhongqing Wu , Jin-Cheng Zheng , Renata M. wentzcovitch

We construct the equation of state (EOS) in a wide density range for neutron stars using the relativistic mean field theory. The properties of neutron star matter with both uniform and non-uniform distributions are studied consistently. The…

核理论 · 物理学 2009-11-07 H. Shen

We present fully general relativistic simulations of binary neutron star mergers, employing a new zero- temperature chiral effective field theory equation of state, the BL EOS. We offer a comparison with respect to the older GM3 EOS, which…

高能天体物理现象 · 物理学 2018-09-06 Andrea Endrizzi , Domenico Logoteta , Bruno Giacomazzo , Ignazio Bombaci , Wolfgang Kastaun , Riccardo Ciolfi

Analytical representations are derived for two equations of state (EOSs) of neutron-star matter: FPS and SLy. Each of these EOSs is unified, that is, it describes the crust and the core of a neutron star using the same physical model. Two…

天体物理学 · 物理学 2007-05-23 P. Haensel , A. Y. Potekhin

Recent advances in the study of equations of state of thermal lattice Quantum Chromodynamics obtained at non-zero baryon density allow validation of the quark-gluon plasma (QGP) liquid model equations of state (EoS). We study here the…

高能物理 - 唯象学 · 物理学 2009-11-10 J. Letessier , J. Rafelski

Supercritical oxidation processes in jet-stirred reactors (JSR) have been modeled based on ideal gas assumption. This can lead to significant errors in or complete misinterpretation of modeling results. Therefore, this study newly developed…

化学物理 · 物理学 2024-09-04 Mingrui Wang , Ruoyue Tang , Xinrui Ren , Hongqing Wu , Ting Zhang , Song Cheng

An equation of state (EOS) for uniform nuclear matter is constructed at zero and finite temperatures with the variational method starting from the realistic nuclear Hamiltonian composed of the Argonne V18 and UIX potentials. The energy is…

核理论 · 物理学 2008-11-26 H. Kanzawa , K. Oyamatsu , K. Sumiyoshi , M. Takano