Comparison between relativistic and nonrelativistic models of the nucleon-nucleon effective interaction. I. Normal-parity isoscalar transitions

1994 ◽  
Vol 49 (3) ◽  
pp. 1315-1336 ◽  
Author(s):  
J. J. Kelly ◽  
S. J. Wallace
Keyword(s):  
Effective Interaction ◽  
Nucleon Nucleon ◽  
Normal Parity

scholarly journals Nucleon-Nucleon t-matrix Effective Interaction for (p, 2p)Reactions

2012 ◽  
Vol 374 ◽  
pp. 012009 ◽  
Author(s):  
Arun K Jain ◽  
B N Joshi ◽  
Sudhir R Jain
Keyword(s):  
Effective Interaction ◽  
Nucleon Nucleon ◽  
T Matrix

scholarly journals The calculation of Binding Energy and Incompressibility, Pressure, and Velocity of Sound of Infinite Nuclear matter Using New One Boson Interaction.

2019 ◽  
Vol 1 ◽  
pp. 288-293
Author(s):  
M T Aper ◽  
F Gbaorun ◽  
J O Fiase
Keyword(s):  
Binding Energy ◽  
Nuclear Matter ◽  
Effective Interaction ◽  
Research Work ◽  
Nucleon Nucleon ◽  
Matrix Approach ◽  
Velocity Of Sound ◽  
Model Calculations ◽  
Effective Interactions

The use of effective nucleon – nucleon (N N) interactions for the determination of nuclear matter properties such as, binding energy per nucleon, incompressibility,K of infinite nuclear matter, pressure 0 and velocity of sound of nuclear matter has been a subject of great interest to nuclear physicists for many decades. The effective interaction usually involved in these calculations has been the Michigan three Yukawa (M3Y) effective interactions whose origin is from G- matrix approach. In this research work however, we have used a newly developed interaction known as new one boson (NOB) effective interaction to carry out similar calculations. This new interaction is based on the Lowest Order Constrained Variational (LOCV) technique. The interaction reproduces the saturation energy of spin and isospin infinite nuclear matter of approximately -16MeV at the normal nuclear matter saturation density consistent with the best available density-dependent interaction derived from the G-matrix approach. The results of the incompressibility obtained using the NOB interaction ranges from 304 to 309 MeV. These values are in good agreement with the values of incompressibility obtained for similar calculations using the M3Y – Reid effective interaction, in which values for K range from 304 to 310 MeV. The results of 0 pressure and velocity of sound of infinite nuclear matter obtained in the present calculations are also in excellent agreement with results of other workers. The results of our present calculations indicate that, the NOB interaction has passed the basic test for an effective interaction. The NOB may therefore be applied to other nuclear matter and optical model calculations to ascertain its reliability.

Application of JLM folding model to alpha-nucleus scattering

2006 ◽  
Vol 21 (31n33) ◽  
pp. 2439-2446
Author(s):  
T. Furumoto ◽  
Y. Sakuragi
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Matrix Theory ◽  
Effective Interaction ◽  
Nucleon Nucleon ◽  
Model Potential ◽  
Systematic Analysis ◽  
Folding Potential ◽  
Optical Model Potential ◽  
Double Folding

A systematic analysis of alpha(4 He )-nucleus elastic scattering is made by using a microscopic optical model potential obtained by the double folding of a complex nucleon-nucleon (NN) effective interaction based on the G-matrix theory. We adopt the so-called JLM interaction as the complex NN interaction and test its applicability to the 4 He elastic scattering by 12 C , 16 O , 28 Si and 40 Ca . The experimental cross sections for incident energies ranging from E Lab = 40 to 240 MeV are well reproduced by the double folding potential up to backward angles. Although modification of the real and imaginary potential strength by about 25% and 35%, respectively, in average is necessary to reproduce the data, the renormalization factors are found to be almost constant with respect to the incident energy and target mass number.

scholarly journals Realistic shell model and nuclei around 132Sn

2020 ◽  
Vol 232 ◽  
pp. 04006
Author(s):  
A. Gargano ◽  
G. De Gregorio
Keyword(s):  
Shell Model ◽  
Nuclear Structure ◽  
Effective Interaction ◽  
Deep Understanding ◽  
Nucleon Nucleon ◽  
Nucleon Potential ◽  
Model Study ◽  
Low K

This contribution reports on a shell-model study of nuclei in the 132Sn region employing a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential renormalized through the use of the Vlow−k approach. We shall focus on some selected results for nuclei with a few valence particles and/or holes with respect to 132Sn, namely Sn isotopes with N > 82 and 130Te, which have, in part, been discussed in previous papers. Results are compared with experiments, and predictions that may provide guidance to future experiments are also discussed. It is the aim of this contribution to underline the importance of studying 132Sn neighbours to acquire a deep understanding of nuclear structure, that may be very useful also in other physics fields, and to show that the realistic shell model is a very effective tool to conduct these studies.

PROTON SUPERFLUIDITY IN NEUTRON STAR MATTER WITH AN EFFECTIVE INTERACTION

1995 ◽  
Vol 04 (04) ◽  
pp. 843-848 ◽  
Author(s):  
G. LAZZARI ◽  
F.V. DE BLASIO
Keyword(s):  
Neutron Star ◽  
Proton Energy ◽  
Energy Gap ◽  
Effective Interaction ◽  
Nucleon Nucleon ◽  
Neutron Star Matter ◽  
Nucleon Interaction ◽  
Effective Force ◽  
Nucleon Nucleon Interaction ◽  
Considerable Range

The isotropic proton superfluidity in Neutron Star Matter is evaluated in the conventional BCS approach using Gogny effective force as the nucleon-nucleon interaction. We have found that, neglecting the polarizability effects and including different proton concentrations in neutron star matter, the 1S0 proton energy gap is considerably smaller than the corresponding neutron isotropic gap. It is shown that at higher densities proton superfluidity could prevail in a considerable range of density in the interior of a neutron star.

PAIRING INTERACTION POTENTIAL WITH REALISTIC FORCE IN NEUTRON AND NUCLEAR MATTER

2006 ◽  
Vol 15 (08) ◽  
pp. 1769-1777
Author(s):  
CAIWAN SHEN
Keyword(s):  
Nuclear Matter ◽  
Interaction Potential ◽  
Effective Interaction ◽  
Nucleon Nucleon ◽  
Pairing Interaction ◽  
Nucleon Interaction ◽  
Explicit Formulas ◽  
Nucleon Nucleon Interaction ◽  
Realistic Force

Using the realistic nucleon-nucleon interaction, we studied the pairing interaction potential for 1S0 and 3S1 channel in neutron and nuclear matter. The explicit formulas are given for the calculation. It is found that the screening using realistic force is much smaller than that using effective interaction, for instance, Gogny force or G-matrix.

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