Nuclear symmetry energy constraints for RMF calculations of superheavy nuclei

Gmuca, Stefan; Bunta, J. Kotulic

doi:10.1016/j.nuclphysa.2004.01.027

Cited by 1 publication

(3 citation statements)

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“…), linear density dependence of the symmetry energy (L) and various quantities (K sym ), (K asy ) and (K sat2 ) as given by Eqs. (11)(12)(13)(14)(15). The shaded region represents the observational constraints taken from Ref.…”

Section: Discussionmentioning

confidence: 99%

“…There have been several parameterizations [2,[11][12][13][14][15] of extended RMF models. Earlier parameter sets G1, G2 and TM1* were generated by considering almost all the terms upto the quartic order.…”

Section: Introductionmentioning

confidence: 99%

“…Some bulk properties of the nuclear matter at the saturation density (ρ s ): binding energy per nucleon (B/A), incompressibility coefficient for symmetric nuclear matter (K), symmetry energy (E sym ), linear density dependence of the symmetry energy (L) and various quantities (K sym ), (K asy ) and (K sat2 ) as given by Eqs (11)(12)(13)(14)(15)…”

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confidence: 99%

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Optimization of relativistic mean field model for finite nuclei to neutron star matter

2012

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We have optimized the parameters of extended relativistic mean-field model using a selected set of global observables which includes binding energies and charge radii for nuclei along several isotopic and isotonic chains and the iso-scalar giant monopole resonance energies for the 90 Zr and 208 Pb nuclei. The model parameters are further constrained by the available informations on the energy per neutron for the dilute neutron matter and bounds on the equations of state of the symmetric and asymmetric nuclear matter at supra-nuclear densities. Two new parameter sets BSP and IUFSU* are obtained, later one being the variant of recently proposed IUFSU parameter set. The BSP parametrization uses the contributions from the quartic order cross-coupling between ω and σ mesons to model the high density behaviour of the equation of state instead of the ω meson selfcoupling as in the case of IUFSU* or IUFSU. Our parameter sets yield appreciable improvements in the binding energy systematics and the equation of state for the dilute neutron matter. The importance of the quartic order ω − σ cross coupling term of the extended RMF model, as often ignored, is realized.

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