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When modeling nuclear processes which occur in heavy-ion reactions, it is necessary to calculate the potential energy of interaction between two nuclei. One of the main features determining the dynamics of the nucleus-nucleus collision is…

核理论 · 物理学 2023-11-16 Makar Simonov , Alexander Karpov , Tatiana Tretyakova

In this work, we propose a meta-modelling technique to nuclear matter on the basis of a relativistic density functional with density-dependent couplings. Identical density dependence for the couplings both in the isoscalar and isovector…

核理论 · 物理学 2023-10-31 Prasanta Char , Chiranjib Mondal , Francesca Gulminelli , Micaela Oertel

Using the nuclear symmetry energy that has been recently constrained by the isospin diffusion data in intermediate-energy heavy ion collisions, we have studied the transition density and pressure at the inner edge of neutron star crusts,…

核理论 · 物理学 2014-11-20 Jun Xu , Che Ming Ko , Lie-Wen Chen , Bao-an Li , Hong-Ru Ma

We analyze the inelastic electron-electron scattering in undoped graphene within the Keldysh diagrammatic approach. We demonstrate that finite temperature strongly affects the screening properties of graphene, which, in turn, influences the…

强关联电子 · 物理学 2011-06-27 M. Schuett , P. M. Ostrovsky , I. V. Gornyi , A. D. Mirlin

The mechanism of stabilization of neutron-excess nuclei in stars is considered. This mechanism must produce the neutronisation process in hot stars in the same way as it occurs in the dwarfs.

太阳与恒星天体物理 · 物理学 2009-02-23 B. V. Vasiliev

We are investigating mass fractions on the crust of a neutron star which would remain after one year of cooling. We use cooling curves corresponding with various densities, or depths, of the neutron star just after its formation. We assume…

天体物理学 · 物理学 2009-06-23 Kelsey L. Hoffman , Jeremy S. Heyl

Ultracold plasmas are a promising candidate for the creation of strongly-coupled Coulomb systems. Unfortunately, the values of the coupling parameter Gamma_e actually achieved after photoionization of the neutral atoms remain relatively…

等离子体物理 · 物理学 2022-11-23 Yurii V. Dumin , Anastasiia T. Lukashenko

Practical expressions are derived for a rapid and accurate evaluation of electric and thermal conductivities and thermopower of degenerate relativistic electrons along quantizing magnetic fields in outer neutron star crusts. The electron…

天体物理学 · 物理学 2011-05-23 A. Y. Potekhin , D. G. Yakovlev

We present a general method for determining screened Coulomb parameters in molecular assemblies, in particular organic molecular crystals. This allows us to calculate the interaction parameters used in a generalized Hubbard model…

强关联电子 · 物理学 2015-05-18 Laura Cano-Cortes , Andreas Dolfen , Jaime Merino , Erik Koch

We consider a system of $N$ hard spheres sitting on the nodes of either the $\mathrm{FCC}$ or $\mathrm{HCP}$ lattice and interacting via a sticky-disk potential. As $N$ tends to infinity (continuum limit), assuming the interaction energy…

偏微分方程分析 · 数学 2023-07-26 Marco Cicalese , Leonard Kreutz , Gian Paolo Leonardi

Nuclear pasta, that is an inhomogeneous distribution of nuclear matter characterised by non-spherical clustered structures, is expected to occur in a narrow spatial region at the bottom of the inner crust of neutron stars, but the width of…

高能天体物理现象 · 物理学 2021-11-09 H. Dinh Thi , A. F. Fantina , F. Gulminelli

We present a parametrization of the pair correlation function and the static structure factor of the Coulomb one component plasma (OCP) from the weakly coupled regime to the strongly coupled regime. Recent experiments strongly suggest that…

等离子体物理 · 物理学 2016-11-03 Nicolas Desbiens , Philippe Arnault , Jean Clérouin

Superfluid properties of the inner crust matter of neutron stars, formed by nuclear clusters immersed in a dilute neutron gas, are analysed in a self- consistent HFB approach. The calculations are performed with two pairing forces, fixed so…

核理论 · 物理学 2009-11-10 N. Sandulescu , Nguyen Van Giai , R. J. Liotta

Neutron Stars are natural laboratories where fundamental properties of matter under extreme conditions can be explored. Modern nuclear physics input as well as many-body theories are valuable tools which may allow us to improve our…

太阳与恒星天体物理 · 物理学 2015-06-11 V. de la Mota , F. Sébille , Ph. Eudes

We studied the structural, dynamical properties and melting of a quasi-one-dimensional system of charged particles, interacting through a screened Coulomb potential. The ground state energy was calculated and, depending on the density and…

介观与纳米尺度物理 · 物理学 2009-11-10 G. Piacente , I. V. Schweigert , J. J. Betouras , F. M. Peeters

Calculations of the effects of band structure on the neutron superfluid density in the crust of neutron stars made under the assumption that the effects of pairing are small [N. Chamel, Phys. Rev. C 85, 035801 (2012)] lead to moments of…

核理论 · 物理学 2017-08-16 Gentaro Watanabe , C. J. Pethick

Neutron star crusts are studied using a classical molecular dynamics model developed for heavy ion reactions. After the model is shown to produce a plethora of the so-called "pasta" shapes, a series of techniques borrowed from nuclear…

核理论 · 物理学 2015-06-11 C. O. Dorso , P. A. Giménez Molinelli , J. A. López

For more than three decades, the inner crust of neutron stars, formed of a solid lattice of nuclear clusters coexisting with a gas of electrons and neutrons, has been traditionally studied in the Wigner-Seitz approximation. The validity of…

天体物理学 · 物理学 2017-08-23 N. Chamel

Thermal and electric conductivities are calculated for degenerate electrons scattered by phonons in a crystal made of atomic nuclei. The exact phonon spectrum and the Debye--Waller factor are taken into account. Monte Carlo calculations are…

天体物理学 · 物理学 2007-05-23 D. A. Baiko , D. G. Yakovlev

The theory of the effect of external fluctuation force on the stability and spatial distribution of mutually interacting and slowly evaporating charged drops, levitated in an electrodynamic balance, is presented using classical…

流体动力学 · 物理学 2020-07-07 Mohit Singh , Y. S. Mayya , Rochish Thaokar
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