Isospin Asymmetry in the Pseudospin Dynamical Symmetry

Dynamical Nature of the Nuclear Pseudospin and Its Isospin Asymmetry

Pseudospin symmetry in nuclei is investigated by solving the Dirac equation with Woods-Saxon scalar and vector radial potentials. We relate the pseudospin interaction with a pseudospin-orbit term in a Schroedinger-like equation for the lower component of the Dirac spinor. We show that this term gives a large contribution to the energy splittings of pseudospin partners, so that the near pseudosp...

ar X iv : n uc l - th / 0 01 10 53 v 3 2 5 M ay 2 00 1 Isospin Asymmetry in the Pseudospin Dynamical Symmetry

Pseudospin symmetry in nuclei is investigated considering the Dirac equation with a Lorentz structured Woods-Saxon potential. The isospin correlation of the energy splittings of pseudospin partners with the nuclear potential parameters is studied. We show that, in an isotopic chain, the pseudospin symmetry is better realized for neutrons than for protons. This behavior comes from balance effect...

Isospin asymmetry in nuclei and nuclear symmetry energy

Binding energy of isospin asymmetric nuclei can be accessed with minimally modified formula along the lines of the liquid droplet model by partitioning the symmetry term into volume and surface terms. The volume symmetry energy coefficient extracted from finite nuclei provides a constraint on the nuclear symmetry energy. This approach also yields the neutron skin of a finite nucleus through its...

Top Mass and Isospin Breaking in Dynamical Symmetry Breaking Scenario

We consider a scenario where the top-quark mass is generated dynamically, and study the implication of the present experimental values for mt and the T parameter. We assume technicolor-like scenario for inducing the W mass and an effective four fermi operator for inducing the top-quark mass. We also assume that only this four fermi operator is relevant at low energy. Then we estimate in detail ...

Relativistic Pseudospin Symmetry in Nuclei