The self-energy of nucleons in asymmetric nuclear matter is evaluated employing different realistic models for the nucleon-nucleon interaction. Starting from Brueckner-Hartree-Fock approximation without usual angle average two-nucleon propagator effects hole-hole contributions are investigated within self-consistent Green's function approach. Special attention paid to isospin dependence correlations, which can be deduced spectral functions matter. strong components proton-neutron interaction...

Properties of asymmetric nuclear matter are derived from various many-body approaches. This includes phenomenological ones like the Skyrme Hartree-Fock and relativistic mean field approaches, which adjusted to fit properties nuclei, as well more microscopic attempts Brueckner-Hartree-Fock approximation, a self-consistent Greens function method so-called ${V}_{\mathrm{low}\ensuremath{-}k}$ approach, based on realistic nucleon-nucleon interactions reproduce phase shifts. These approaches...

The one-body potentials for protons and neutrons are obtained from the self-consistent Green-function calculations of asymmetric nuclear matter, in particular their dependence on degree proton/neutron asymmetry. Results binding energy per nucleon as a function density asymmetry parameter presented Green approach using CD-Bonn potential. For sake comparison, same performed Brueckner-Hartree-Fock approximation. contribution hole-hole terms leads to repulsive which increases with density....

The nuclear spectral function at high missing energies and momenta has been determined from a self-consistent calculation of the Green's in matter using realistic nucleon-nucleon interactions. results are compared with recent experimental data derived $(e,{e}^{\ensuremath{'}}p)$ reactions on $^{12}\mathrm{C}$. A rather good agreement is obtained if functions calculated nonperturbative way.

In this paper we have reported the study of symmetry energy within self-consistent Green-function approach. For sake comparison, same calculations are performed using Brueckner–Hartree–Fock approximation. The is calculated for different densities and discussed in comparison with other predictions. Green's function leads to slightly larger energies as compared This effect increases density thereby smaller energies. calculation approach shows a monotonic increase baryonic density. We extract...

Tensor target spin asymmetries [Formula: see text] ([Formula: text]=0,1,2) in the reaction are studied for photon energies from text]-threshold up to 1.5[Formula: text]GeV with inclusion of rescattering effects. It is shown that influence effects on tensor sizable energy region near text]-threshold. At higher energies, much smaller seen. The sensitivity obtained results elementary pion photoproduction operator investigated and a considerable dependence found, particular at forward angles. In...

The equation of state (EOS) symmetric nuclear and pure neutron matter has been investigated extensively by adopting the non-relativistic Brueckner-Hartree-Fock (BHF). For more comparison, extended BHF approaches using self-consistent Green’s function approach or including a three-body force will be done. EOS studied for different at zero temperature. We can calculate total mass radius stars various equations state. A comparison with relativistic calculations Relativistic effects are known to...

The single-particle potentials and other properties at absolute zero temperature in isospin asymmetric nuclear matter are investigated the frame of an extended Brueckner theory. Also thermal quantities calculated using CD-Bonn potential Urbana three-body forces (3BF). Also, effects hole–hole contributions within self-consistent Greens function approach. inclusion 3BF or improves predicted saturation property symmetric Brueckner–Hartree–Fock approach it leads to a significant stiffening...

The Mathisson-Papapetrou equations are used to study the deviation of spinning particle world lines and trajectories from corresponding geodesic in Schwarzschild's background.The traditional form these their consequences terms comoving tetrads considered.Analytical numerical calculations for equatorial motions performed.The circular, quasi-circular, quasi-radial highly relativistic analyzed.Different illustrations presented.

Symmetric nuclear matter is studied within the Brueckner-Hartree-Fock (BHF) approach and extending to self-consistent Green’s function (SCGF) approach. Both approximations are based on realistic nucleon-nucleon interaction; that is, CD-Bonn potential chosen. The single-particle energy equation of state (EOS) studied. Fermi at saturation point fulfills Hugenholtz-Van Hove theorem. In comparison BHF approach, binding reduced EOS stiffer. SCGF approaches do not reproduce correct point. A simple...

The microscopic and bulk properties of nuclear matter at zero finite temperatures are studied in the frame Brueckner theory. results for symmetry energy also obtained using different potentials. calculations based on realistic nucleon-nucleon interactions which reproduce phase shifts. These approaches supplemented by a density-dependent contact interaction to achieve empirical saturation property symmetric matter. Special attention is paid behavior effective mass asymmetric potential fixed...

We study the equation of state (EOS) symmetric nuclear and neutron matter within framework Brueckner-Hartree-Fock (BHF) approach which is extended by including a density-dependent contact interaction to achieve empirical saturation property matter. This method shown affect significantly EOS density dependence symmetry energy at high densities above normal density, it necessary for reproducing in nonrelativistic microscopic framework. Realistic nucleon-nucleon interactions reproduce phase...

Results of cold and hot symmetric nuclear matter pure neutron calculations are presented. The Brueckner-Hartree-Fock (BHF) approximation + two body density dependent Skyrme potential which is equivalent to three interaction used. Various modern nucleon-nucleon (NN) potentials used in the framework BHF approxima- tion, e.g.: CD-Bonn potential, Nijm1 Reid 93 Argonne V18 potential. bulk properties asym- metric computed such as equation state (EOS) at (T = 0), pressure 0, 5 10 MeV), single...

We study the properties of symmetric nuclear matter and pure neutron at zero temperature within framework Brueckner theory using tabulated values effective masses depth single-particle energies. These are chosen according to work Hassaneen et al, 2011. The Brueckner–Hartree–Fock approximation plus a density-dependent contact term as three-body force used achieve empirical saturation property matter. provides strong enhancement pressure incompressibility in good agreement with relativistic...