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An equation of state(EOS) of nuclear matter with explicit inclusion of a spin-isospin dependent force is constructed from a finite range, momentum and density dependent effective interaction. This EOS is found to be in good agreement with…

Nuclear Theory · Physics 2009-10-30 V. S. Uma Maheswari , D. N. Basu , J. N. De , S. K. Samaddar

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…

Nuclear Theory · Physics 2014-03-05 H. Togashi , M. Takano , K. Sumiyoshi , K. Nakazato

Particle production in relativistic collisions of heavy nuclei is analyzed in a wide range of incident energies 2.7 GeV $\le \sqrt{s_{NN}}\le$ 62.4 GeV. The analysis is performed within the three-fluid model employing three different…

Nuclear Theory · Physics 2014-01-23 Yu. B. Ivanov

In a recent paper (Chabrier et al. 2019), we have derived a new equation of state (EOS) for dense hydrogen/helium mixtures which covers the temperature-density domain from solar-type stars to brown dwarfs and gaseous planets. This EOS is…

Solar and Stellar Astrophysics · Physics 2021-08-18 Gilles Chabrier , Florian Debras

Analysis of directed flow ($v_1$) of protons, antiprotons and pions in heavy-ion collisions is performed in the range of collision energies $\sqrt{s_{NN}}$ = 2.7--39 GeV. Simulations have been done within a three-fluid model employing a…

Nuclear Theory · Physics 2017-12-12 Yuri B. Ivanov

The $98^\circ$ obliquity of Uranus is widely attributed to a giant impact that ejected material and formed a debris disk, which subsequently coalesced into its regular satellites. Previous Smoothed Particle Hydrodynamics (SPH) studies have…

Earth and Planetary Astrophysics · Physics 2026-05-28 Keiya Murashima , Takanori Sasaki

We introduce a general method to merge multidimensional equations of state (EoSs) by combining them in a two-fluid equilibrium statistical mixture in the grand canonical ensemble. The merged grand potential density $\omega$ is built…

The giant impact (GI) is one of the most important hypotheses both in planetary science and geoscience, since it is related to the origin of the Moon and also the initial condition of the Earth. A number of numerical simulations have been…

Earth and Planetary Astrophysics · Physics 2017-06-21 Natsuki Hosono , Masaki Iwasawa , Ataru Tanikawa , Keigo Nitadori , Takayuki Muranushi , Junichiro Makino

The equation of state (EOS) of dense matter is an essential ingredient for numerical simulations of core-collapse supernovae and neutron star mergers. The properties of matter near and above nuclear saturation density are uncertain, which…

High Energy Astrophysical Phenomena · Physics 2017-12-13 Andre da Silva Schneider , Luke F. Roberts , Christian D. Ott

We present an updated general purpose nuclear equation of state (EoS) for use in simulations of core-collapse supernovae, neutron star mergers and black hole collapse. This EoS is formulated in the context of Density Functional Theory (DFT)…

The aim of our work is to develop a unified equation of state (EoS) for nuclear and quark matter for a wide range in temperature, density and isospin so that it becomes applicable for heavy-ion collisions as well as for the astrophysics of…

Nuclear Theory · Physics 2016-03-23 N. -U. Bastian , D. Blaschke

We explore the consequences of imposing robust thermodynamic constraints arising from perturbative Quantum Chromodynamics (QCD) when inferring the dense-matter equation-of-state (EOS). We find that the termination density, up to which the…

We study equal and unequal-mass neutron star mergers by means of new numerical relativity simulations in which the general relativistic hydrodynamics solver employs an algorithm that guarantees mass conservation across the refinement levels…

General Relativity and Quantum Cosmology · Physics 2015-06-17 Tim Dietrich , Sebastiano Bernuzzi , Maximiliano Ujevic , Bernd Bruegmann

The equation of state (EOS) is of utmost importance for the description of the hydrodynamic phase of strongly interacting matter in relativistic heavy-ion collisions. Lattice QCD can provide useful information on the EOS, mainly for small…

High Energy Physics - Phenomenology · Physics 2008-03-12 R. Schulze , M. Bluhm , B. Kampfer

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…

Computational Engineering, Finance, and Science · Computer Science 2024-03-08 Kane C. Bennett , Alyson M. Stahl , Thomas R. Canfield , Garrett G. Euler

Nuclear theory and experiments, alongside astrophysical observations, constrain the equation of state (EOS) of supranuclear-dense matter. Conversely, knowledge of the EOS allows an improved interpretation of nuclear or astrophysical data.…

High Energy Astrophysical Phenomena · Physics 2024-11-27 Hauke Koehn , Thibeau Wouters , Henrik Rose , Peter T. H. Pang , Rahul Somasundaram , Ingo Tews , Tim Dietrich

Relating different global neutron-star (NS) properties, such as tidal deformability and radius, or mass and radius, requires an equation of state (EoS). Determining the NS EoS is therefore not only the science goal of a variety of…

High Energy Astrophysical Phenomena · Physics 2024-06-27 P. J. Davis , H. Dinh Thi , A. F. Fantina , F. Gulminelli , M. Oertel , L. Suleiman

How to select out those collisions with the desired geometry such as tip-tip and/or body-body in experiment is one key point for performing high energy UU collisions. With a relativistic transport model, we performed a simulation for…

Nuclear Theory · Physics 2008-11-20 K. J. Wu , F. Liu , N. Xu

The detection of GW170817, the first neutron star-neutron star merger observed by Advanced LIGO and Virgo, and its following analyses represent the first contributions of gravitational wave (GW) data to understanding dense matter.…

General Relativity and Quantum Cosmology · Physics 2021-11-08 Rossella Gamba , Jocelyn S. Read , Leslie E. Wade

Numerical simulations of the stochastic end stage of planet formation typically begin with a population of embryos and planetesimals that grow into planets by merging. We analyzed the impact parameters of collisions leading to the growth of…

Earth and Planetary Astrophysics · Physics 2012-05-04 S. T. Stewart , Z. M. Leinhardt