In:
Journal of Physics: Conference Series, IOP Publishing, Vol. 1643, No. 1 ( 2020-12-01), p. 012015-
Abstract:
Using the Lorentz-covariant decomposition of nucleon self-energies with relativistic mean-field approximation, we study the effect of Fock terms on the density dependence of nuclear symmetry energy, E sym . It is found that the Fock contribution suppresses the potential part of E sym at higher densities, and the constraint from the heavy-ion collision data is in favor of the present result including exchange terms with the cutoff parameters given by the CD-Bonn potential. In addition, not only the isovector-vector ( ρ ) meson but also the isoscalar ( σ, ω ) and π mesons give influence on the potential part of E sym through the exchange diagram.
Type of Medium:
Online Resource
ISSN:
1742-6588
,
1742-6596
DOI:
10.1088/1742-6596/1643/1/012015
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2020
detail.hit.zdb_id:
2166409-2
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