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Title: Transport properties of isospin asymmetric nuclear matter using the time-dependent Hartree-Fock method

Authors:
; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1377692
Grant/Contract Number:
SC0013847
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 96; Journal Issue: 2; Related Information: CHORUS Timestamp: 2017-08-30 14:36:48; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Umar, A. S., Simenel, C., and Ye, W.. Transport properties of isospin asymmetric nuclear matter using the time-dependent Hartree-Fock method. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.96.024625.
Umar, A. S., Simenel, C., & Ye, W.. Transport properties of isospin asymmetric nuclear matter using the time-dependent Hartree-Fock method. United States. doi:10.1103/PhysRevC.96.024625.
Umar, A. S., Simenel, C., and Ye, W.. Wed . "Transport properties of isospin asymmetric nuclear matter using the time-dependent Hartree-Fock method". United States. doi:10.1103/PhysRevC.96.024625.
@article{osti_1377692,
title = {Transport properties of isospin asymmetric nuclear matter using the time-dependent Hartree-Fock method},
author = {Umar, A. S. and Simenel, C. and Ye, W.},
abstractNote = {},
doi = {10.1103/PhysRevC.96.024625},
journal = {Physical Review C},
number = 2,
volume = 96,
place = {United States},
year = {Wed Aug 30 00:00:00 EDT 2017},
month = {Wed Aug 30 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on August 30, 2018
Publisher's Accepted Manuscript

Citation Metrics:
Cited by: 4works
Citation information provided by
Web of Science

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  • Nuclear-matter density oscillations are considered without the assumption that their amplitude is small. The so-called scaling version of the adiabatic time-dependent Hartree-Fock theory is used to find the collective Hamiltonian describing these oscillations. The question of under which conditions the oscillations in question can be studied in the harmonic approximation is investigated in detail.
  • Using various relativistic mean-field models, including nonlinear ones with meson field self-interactions, models with density-dependent meson-nucleon couplings, and point-coupling models without meson fields, we have studied the isospin-dependent bulk and single-particle properties of asymmetric nuclear matter. In particular, we have determined the density dependence of nuclear symmetry energy from these different relativistic mean-field models and compared the results with the constraints recently extracted from analyses of experimental data on isospin diffusion and isotopic scaling in intermediate energy heavy-ion collisions as well as from measured isotopic dependence of the giant monopole resonances in even-A Sn isotopes. Among the 23 parameter setsmore » in the relativistic mean-field model that are commonly used for nuclear structure studies, only a few are found to give symmetry energies that are consistent with the empirical constraints. We have also studied the nuclear symmetry potential and the isospin splitting of the nucleon effective mass in isospin asymmetric nuclear matter. We find that both the momentum dependence of the nuclear symmetry potential at fixed baryon density and the isospin splitting of the nucleon effective mass in neutron-rich nuclear matter depend not only on the nuclear interactions but also on the definition of the nucleon optical potential.« less
  • Thermal properties of asymmetric nuclear matter are studied within a self-consistent thermal model using an isospin and momentum-dependent interaction (MDI) constrained by the isospin diffusion data in heavy-ion collisions, a momentum-independent interaction (MID), and an isoscalar momentum-dependent interaction (eMDYI). In particular, we study the temperature dependence of the isospin-dependent bulk and single-particle properties, the mechanical and chemical instabilities, and liquid-gas phase transition in hot asymmetric nuclear matter. Our results indicate that the temperature dependence of the equation of state and the symmetry energy are not so sensitive to the momentum dependence of the interaction. The symmetry energy at fixed densitymore » is found to generally decrease with temperature and for the MDI interaction the decrement is essentially due to the potential part. It is further shown that only the low momentum part of the single-particle potential and the nucleon effective mass increases significantly with temperature for the momentum-dependent interactions. For the MDI interaction, the low momentum part of the symmetry potential is significantly reduced with increasing temperature. For the mechanical and chemical instabilities as well as the liquid-gas phase transition in hot asymmetric nuclear matter, our results indicate that the boundaries of these instabilities and the phase-coexistence region generally shrink with increasing temperature and are sensitive to the density dependence of the symmetry energy and the isospin and momentum dependence of the nuclear interaction, especially at higher temperatures.« less
  • 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 isovector components of the density dependent M3Y interaction. The incompressibility K{sub {infinity}} for the symmetric nuclear matter, the isospin dependent part K{sub asy} of the isobaric incompressibility, and the slope L are all in excellent agreement with the constraints recently extracted from measured isotopic dependence of the giant monopole resonances in even-A Sn isotopes, from the neutron skin thickness of nuclei, and from analyses of experimental data on isospin diffusion and isotopic scalingmore » in intermediate energy heavy-ion collisions. This work provides a fundamental basis for the understanding of nuclear matter under extreme conditions and validates the important empirical constraints obtained from recent experimental data.« less
  • Cited by 14