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Nuclear Theory·nucl-th

Wednesday·March 25, 2020

12 papers—4 primary·8 cross-listed

All12Primary4Cross-lists8
  1. 01

    Propagation of non-linear waves in hot, ideal, and non-extensive quark-gluon plasma

    Trambak Bhattacharyya🇷🇺 · Abhik Mukherjee🇷🇺

    We study the propagation of energy density perturbation in a hot, ideal quark-gluon medium in which quarks and gluons follow the Tsallis-like momentum distributions. We have observed that a non-extensive MIT bag equation of state obtained with the help of the quantum Tsallis-like distributions gives rise to a breaking wave solution of the equation dictating the evolution of energy density perturbation. However, the breaking of waves is delayed when the value of the Tsallis q parameter and the Tsallis temperature T are higher.

    nucl-thhep-exhep-phEPJC(2020)·11 citations
  2. 02

    High precision studies of soft dipole mode in two-neutron halo nuclei: He case

    L.V. Grigorenko · N.B. Shulgina · M.V. Zhukov

    The "soft dipole" E1 strength function is calculated for the transition from the He ground state to the continuum He++. The calculations were performed within the hyperspherical harmonics formalism. The sensitivity of the results to the He ground state structure and to final state interactions, are analyzed. The large-basis calculations show the reliably converged results for soft dipole strength function and for momentum correlations of the He++ dissociation products. Transition mechanisms are analyzed based on the momentum correlations. The comparison with experimental data is provided.

    nucl-thPRC(2020)·11 citations
  3. 03

    Sensitivity of the Mean Field Dynamics to the Spatial Distribution in Nuclear One-body Dissipations

    Yong-Zhong Xing · Wei-Cheng Fu · Xiao-Bin Liu · Fei-Ping Lu · Hong-Fei Zhang · Yu-Ming Zheng

    Started from the static excited finite atomic nucleus, we have simulated the dynamical propagation of the nucleons using Quantum Molecular Dynamics model (QMD) without the collision term and calculated the Largest Lyapunov Exponent (LLE). The sensitivity of the nonlinear mean field dynamics to the initial conditions, in particular to the initial spatial distribution of the nucleons in certain thermodynamical stable condition, has been confirmed numerically by calculating the LLE defined in the event space. Comparatively, the Lyapunov-like exponent defined in phase space represents more clearly the sensitivity of the nonlinear dynamics to the mechanical stability of the initial conditions within the nuclear reaction time at intermediate energies. These conclusions are not only helpful for us to understand more deeply the mechanism of the nuclear reaction dynamics at intermediate energies, but it is also beneficial for clarifying further the concrete performances of deterministic chaos in the heavy-ion collisions.

    nucl-thNPA(2020)·1 citation
  4. 04

    Properties of spherical and deformed nuclei using regularized pseudopotentials in nuclear DFT

    K. Bennaceur🇫🇷 · J. Dobaczewski🇬🇧 · T. Haverinen🇫🇮 · M. Kortelainen🇫🇮

    We developed new parameterizations of local regularized finite-range pseudopotentials up to next-to-next-to-next-to-leading order (N3LO), used as generators of nuclear density functionals. When supplemented with zero-range spin-orbit and density-dependent terms, they provide a correct single-reference description of binding energies and radii of spherical and deformed nuclei. We compared the obtained results to experimental data and discussed benchmarks against the standard well-established Gogny D1S functional.

    nucl-thJ.Phys.G(2020)·13 citations

Affiliations

first authorsco-authorsvia INSPIRE