منابع مشابه
Spin-asymmetry energy of nuclear matter
We calculate the density-dependent spin-asymmetry energy S(kf ) of isospin-symmetric nuclear matter in the three-loop approximation of chiral perturbation theory. The interaction contributions to S(kf ) originate from one-pion exchange, iterated one-pion exchange, and (irreducible) two-pion exchange with no, single, and double virtual ∆-isobar excitation. We find that the truncation to 1π-excha...
متن کاملSpin and Isospin Asymmetry, Equation of State and Neutron Stars
In the present work, we have obtained the equation of state for neutron star matter considering the in uence of the ferromagnetic and antiferromagnetic spin state. We have also investigated the structure of neutron stars. According to our results, the spin asymmetry stiens the equation of state and leads to high mass for the neutron star.
متن کاملSpin-isospin stability of nuclear matter
We calculate the density-dependent spin-isospin asymmetry energy J(kf ) of nuclear matter in the three-loop approximation of chiral perturbation theory. The interaction contributions to J(kf ) originate from one-pion exchange, iterated one-pion exchange, and irreducible two-pion exchange with no, single, and double virtual ∆-isobar excitation. We find that the approximation to 1π-exchange and i...
متن کاملAsymmetry and Spin-orbit Effects in Binding Energy in the Effective Nuclear Surface Approximation
Isoscalar and isovector particle densities are derived analytically by using the approximation of a sharp edged nucleus within the local energy density approach with the proton-neutron asymmetry and spin-orbit effects. Equations for the effective nuclear-surface shapes as collective variables are derived up to the higher order corrections in the form of the macroscopic boundary conditions. The ...
متن کاملSpin Polarization Phenomena in Dense Nuclear Matter
Spin polarized states in nuclear matter with an effective nucleon-nucleon interaction are studied for a wide range of isospin asymmetries and densities. Based on a Fermi liquid theory, it is shown that there are a few possible scenarios of spin ordered phase transitions: (a) nuclear matter undergoes at some critical density a phase transition to a spin polarized state with the oppositely direct...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2004
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.70.054001