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A discrete model for the sintering of polydisperse, inhomogeneous arrays of cylinders is presented with empirical contact force-laws, taking into account plastic deformations, cohesion, temperature dependence (melting), and long-time…

统计力学 · 物理学 2007-05-23 Stefan Luding , Karsten Manetsberger , Johannes Müllers

The volume and surface symmetry parts of the nuclear symmetry energy and other coefficients of the liquid droplet model are determined from the measured atomic masses by the maximum likelihood estimator. The volume symmetry energy…

核理论 · 物理学 2008-11-26 Tapan Mukhopadhyay , D. N. Basu

The hyperon dynamics in heavy-ion collisions near threshold energy has been investigated within the quantum molecular dynamics transport model. The isospin and momentum dependent hyperon-nucleon potential and the threshold energy correction…

核理论 · 物理学 2023-10-03 Zhao-Qing Feng

Out of self-consistent semi-classical calculations performed within the so-called Extended Thomas-Fermi approach for 212 nuclei at all even angular momentum values I ranging between 0 and 80 \hbar and using the Skyrme SkM* effective force,…

核理论 · 物理学 2009-10-31 J. Piperova , D. Samsoen , P. Quentin , K. Bencheikh , J. Bartel , J. Meyer

We use the Isospin Quantum Molecular Dynamics model (IQMD) to analyze the centrality dependence of the isospin ratio of pions, $\pi^-/\pi^+$. We find that the density dependence of the asymmetry potential, the Pauli blocking of the…

核理论 · 物理学 2018-08-30 C. Hartnack , A. Le Fevre , Y. Leifels , J. Aichelin

The fragmentation of projectile and spectator matter is studied at different incident energies using an isospin-dependent QMD model with reduced isospin dependent cross-section. The sensitivity of the production of fragments is analyzed…

核理论 · 物理学 2011-12-23 Karan Singh Vinayak , Suneel Kumar

We study the effect of isospin-dependent nuclear forces on the pasta phase in the inner crust of neutron stars. To this end we model the crust within the framework of quantum molecular dynamics (QMD). For maximizing the numerical…

核理论 · 物理学 2016-08-29 Rana Nandi , Stefan Schramm

The ultimate goal of studying isospin physics via heavy-ion reactions with neutron-rich, stable and/or radioactive nuclei is to explore the isospin dependence of in-medium nuclear effective interactions and the equation of state of…

核理论 · 物理学 2015-04-14 Bao-An Li , Lie-Wen Chen , Che Ming Ko

The density dependence of nuclear symmetry energy $E_{\rm sym}(\rho)$ remains the most uncertain aspect of the equation of state (EOS) of supradense neutron-rich nucleonic matter. Implications of observational crustal fraction of neutron…

核理论 · 物理学 2025-02-11 Nai-Bo Zhang , Bao-An Li

The effects of density dependence of the symmetry energy on the collective modes and dynamical instabilities of cold and warm nuclear and stellar matter are studied in the framework of relativistic mean-field hadron models. The existence of…

核理论 · 物理学 2016-08-14 Helena Pais , Alexandre Santos , Lucília Brito , Constanç a Providência

The symmetry energy characterizes the isospin dependent part of the equation of state of isospin asymmetric strong interaction matter and it plays a critical role in many issues of nuclear physics and astrophysics. In this talk, we briefly…

核理论 · 物理学 2017-08-16 Lie-Wen Chen

The density dependence of nuclear symmetry energy is determined from a systematic study of the isospin dependent bulk properties of asymmetric nuclear matter using the isoscalar and the isovector components of density dependent M3Y…

核理论 · 物理学 2009-08-07 P. Roy Chowdhury , D. N. Basu , C. Samanta

The isospin coupling-channel decomposition of the potential energy density functional is carried out within the covariant density functional theory, and their isospin and density dependence in particular the influence on the symmetry energy…

核理论 · 物理学 2017-11-30 Qian Zhao , Bao Yuan Sun , Wen Hui Long

Symmetry energy for asymmetric nuclear matter at subsaturation densitieswas investigated in the framework of an isospin-dependent quantum molecular dynamics model.Asingle ratio of neutrons and protons is comparedwith the experimental data…

核理论 · 物理学 2011-11-18 Sanjeev Kumar , Y. G. Ma , G. Q. Zhang , C. L. Zhou

We employ a variational method, in the framework of the Thomas-Fermi approximation, to study the effect of the symmetry energy on the neutron skin thickness and the symmetry energy coefficients of various neutron rich nuclei. We concentrate…

核理论 · 物理学 2017-05-17 M. C. Papazoglou , Ch. C. Moustakidis

Significance of the chiral symmetry restoration is studied by considering the role of the modification of the nucleon mass in nuclear medium at finite density and temperature. Using the Korea-IBS-Daegu-SKKU density functional theory, we can…

核理论 · 物理学 2025-03-19 Hajime Togashi , Debashree Sen , Hana Gil , Chang Ho Hyun

The quasistatic behavior of a simple 2D model of a cohesive powder under isotropic loads is investigated by Discrete Element simulations. The loose packing states, as studied in a previous paper, undergo important structural changes under…

材料科学 · 物理学 2008-10-27 Francisco Gilabert , Jean-Noël Roux , Antonio Castellanos

We analyze the influence of the density dependence of the symmetry energy on the average excitation energy of the isoscalar giant monopole resonance (GMR) in stable and exotic neutron-rich nuclei by applying the relativistic extended…

核理论 · 物理学 2010-05-21 M. Centelles , S. K. Patra , X. Roca-Maza , B. K. Sharma , P. D. Stevenson , X. Vinas

Using an isospin- and momentum-dependent transport model we study effects of the momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei. It is found that symmetry potentials with and without the…

核理论 · 物理学 2008-11-26 Bao-An Li , Champak B. Das , Subal Das Gupta , Charles Gale

The phase transition of hadronic to quark matter at high baryon and isospin density is analyzed. Relativistic mean field models are used to describe hadronic matter, and the MIT bag model is adopted for quark matter. The boundaries of the…

核理论 · 物理学 2011-02-28 M. Di Toro , B. Liu , V. Greco , V. Baran , M. Colonna , S. Plumari