Landau parameters for asymmetric nuclear matter with a finite-range density-dependent interaction

1992 ◽  
Vol 545 (3) ◽  
pp. 608-622 ◽  
Author(s):  
N. Rudra ◽  
J.N. De
Keyword(s):  
Nuclear Matter ◽  
Finite Range ◽  
Asymmetric Nuclear Matter ◽  
Density Dependent ◽  
Range Density ◽  
Dependent Interaction

NUCLEAR MATTER PROPERTIES USING DIFFERENT SETS OF PARAMETERS IN THE GOGNY INTERACTION

2002 ◽  
Vol 11 (02) ◽  
pp. 143-154
Author(s):  
Kh. A. RAMADAN ◽  
H. M. M. MANSOUR
Keyword(s):  
Equation Of State ◽  
Nuclear Matter ◽  
The Other ◽  
Interaction Parameters ◽  
Finite Range ◽  
Density Dependent ◽  
Realistic Interaction ◽  
Range Density

In the present work we use the finite range density dependent effective Gogny interaction to study the equation of state of polarized nuclear matter. Six sets of the interaction parameters are used and a comparison is made with the calculations of Friedman and Pandharipande using a realistic interaction. One of the parameter sets (D1) gives similar results for the properties of polarized nuclear matter while the other parameter sets (D1S, D250, D260, D280 and D300) yield results which are reasonably comparable with the realistic interaction calculation of Friedman and Pandharipande

scholarly journals Limiting symmetry energy elements from empirical evidence

2017 ◽  
Vol 26 (05) ◽  
pp. 1750022 ◽  
Author(s):  
B. K. Agrawal ◽  
S. K. Samaddar ◽  
J. N. De ◽  
C. Mondal ◽  
Subhranil De
Keyword(s):  
Nuclear Matter ◽  
Symmetry Energy ◽  
Density Functional ◽  
Effective Interaction ◽  
Finite Range ◽  
Energy Density Functional ◽  
Density Dependent ◽  
Bulk Data ◽  
Energy Coefficient ◽  
Finite Nuclei

In the framework of an equation of state (EoS) constructed from a momentum and density-dependent finite-range two-body effective interaction, the quantitative magnitudes of the different symmetry elements of infinite nuclear matter are explored. The parameters of this interaction are determined from well-accepted characteristic constants associated with homogeneous nuclear matter. The symmetry energy coefficient [Formula: see text], its density slope [Formula: see text], the symmetry incompressibility [Formula: see text] as well as the density-dependent incompressibility [Formula: see text] evaluated with this EoS are seen to be in good harmony with those obtained from other diverse perspectives. The higher order symmetry energy coefficients [Formula: see text], etc., are seen to be not very significant in the domain of densities relevant to finite nuclei, but gradually build up at supra-normal densities. The analysis carried out with a Skyrme-inspired energy density functional (EDF) obtained with the same input values for the empirical bulk data associated with nuclear matter yields nearly the same results.

COLD NEUTRON AND NUCLEAR MATTER WITH EFFECTIVE AND REALISTIC INTERACTIONS

1996 ◽  
Vol 05 (02) ◽  
pp. 353-364 ◽  
Author(s):  
J. VENTURA ◽  
A. POLLS ◽  
X. VIÑAS ◽  
M. PI
Keyword(s):  
Equation Of State ◽  
Nuclear Matter ◽  
Asymmetry Parameter ◽  
Cold Neutron ◽  
Finite Range ◽  
Effective Interactions ◽  
Asymmetric Nuclear Matter ◽  
Hartree Fock ◽  
Range Type ◽  
Zero Range

A study of the equation of state (EOS) for cold asymmetric nuclear matter and beta-stable matter using effective interactions, of zero range (Skyrme type) and finite range type (D1-Gogny), is performed in the Hartree-Fock approach. The results are systematically compared with recent microscopic calculations. Two parametrizations of the energy of asymmetric nuclear matter in terms of the asymmetry parameter are tested in the case of effective interactions. While all forces agree rather well for nuclear matter, some discrepancies appear for neutron matter revealing the different spin-isospin contents of the interactions.

δ MESON EFFECTS ON ASYMMETRIC NUCLEAR MATTER

2008 ◽  
Vol 17 (09) ◽  
pp. 1815-1824 ◽  
Author(s):  
B. LIU ◽  
M. DI TORO ◽  
V. GRECO
Keyword(s):  
Neutron Stars ◽  
Nuclear Matter ◽  
Mean Field ◽  
Coupling Scheme ◽  
Asymmetric Nuclear Matter ◽  
Density Dependent ◽  
Remarkable Effect ◽  
Relativistic Mean Field ◽  
The Stability ◽  
The Impact

The impact of a δ meson field (the scalar-isovector channel) on asymmetric nuclear matter is studied within relativistic mean-field (RMF) models with both constant and density dependent (DD) nucleon-meson couplings. The Equation of State (EOS) for asymmetric nuclear matter and the neutron star properties by the different models are compared. We find that the δ-field in the constant coupling scheme leads to a larger repulsion in dense neutron-rich matter and to a definite splitting of proton and neutron effective masses, finally influencing the stability of the neutron stars. A broader analysis of possible δ-field effects is achieved considering also density dependent nucleon-meson coupling. A remarkable effect on the relation between mass and radius for the neutron stars is seen, showing a significant reduction of the radius along with a moderate mass reduction due to the increase of the effective δ coupling in high density regions.

scholarly journals Application of density dependent parametrization models to asymmetric nuclear matter

2007 ◽  
Vol 75 (4) ◽  
Author(s):  
B. Liu ◽  
M. Di Toro ◽  
V. Greco ◽  
C. W. Shen ◽  
E. G. Zhao ◽  
...  
Keyword(s):  
Nuclear Matter ◽  
Asymmetric Nuclear Matter ◽  
Density Dependent

scholarly journals Approximate particle number projection for finite range density dependent forces

1996 ◽  
Vol 53 (1) ◽  
pp. 172-175 ◽  
Author(s):  
A. Valor ◽  
J. L. Egido ◽  
L. M. Robledo
Keyword(s):  
Particle Number ◽  
Finite Range ◽  
Density Dependent ◽  
Range Density
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