P. Ring

Relativistic mean field theory in finite nuclei

Recent applications of relativistic mean field theory for finite nuclei are reviewed. We discuss the description of ground states of nuclei and their properties like nuclear radii as well as deformation parameters and their energy surfaces. In particular we concentrate on the description of exotic nuclei far from the line of beta-stability. A field theoretical theory for pairingcorrelations is presented and new results for realistic pairing interactions are discussed. High-spin states and superdeformed bands are investigated within the framework of a relativistic extension of the cranking theory. Finally we review applications of time-dependent relativistic mean field theory for the description of oscillations with small amplitudes as well as large amplitude collective motion in connection with relativistic Coulomb excitations.

New parametrization for the Lagrangian density of relativistic mean field theory

A new parametrization for an effective nonlinear Lagrangian density of relativistic mean field (RMF) theory is proposed, which is able to provide a very good description not only for the properties of stable nuclei but also for those far from the valley of beta stability. In addition the recently measured superdeformed minimum in the {sup 194}Hg nucleus is reproduced with high accuracy. {copyright} {ital 1997} {ital The American Physical Society}

rho meson coupling in the relativistic mean field theory and description of exotic nuclei

Abstract The role of the isovector rho-meson coupling on the symmetry energy in the relativistic mean-field theory has been investigated. In a multi-dimensional parameter search for an appropriate force within the framework of the non-linear σωϱ model the ϱ-meson coupling has been found to have a significant effect on the neutron skin of nuclei. It has been shown that a low value of ϱ-meson coupling strength remedies the defect of some of the existing parameter sets of providing a higher neutron skin thickness of nuclei. An extraordinarily good description of highly proton- as well as neutron-rich exotic nuclei has been found. It has been observed that the proper description of both proton-rich and neutron-rich nuclei is sensitive to the symmetry energy.

Variational calculation of energy spectra of rotational nuclei at high spins

Abstract The energy spectra of 162 Er and 168 Yb have been calculated using the Hartree-Fock-Bogoliubov theory and the self-consistent cranking model. The recently discovered anomaly of the spectra at high spins is found to arise from both a reduction of the energy gap and a realignment of the angular momenta of paired nucleons in a high j single-particle state due to the Coriolis anti-pairing effect.

Spin symmetry in the antinucleon spectrum

We discuss spin and pseudospin symmetry in the spectrum of single nucleons and single antinucleons in a nucleus. As an example we use relativistic mean field theory to investigate single antinucleon spectra. We find a very well developed spin symmetry in single antineutron and single antiproton spectra. The dominant components of the wave functions of the spin doublet are almost identical. This spin symmetry in antiparticle spectra and the pseudospin symmetry in particle spectra have the same origin. However, it turns out that the spin symmetry in antinucleon spectra is much better developed than the pseudospin symmetry in normal nuclear single particle spectra.

Relativistic Hartree-Bogoliubov model with density-dependent meson-nucleon couplings

The relativistic Hartree-Bogoliubov (RHB) model is extended to include density-dependent meson-nucleon couplings. The effective Lagrangian is characterized by a phenomenological density dependence of the

Relativistic Nuclear Energy Density Functionals: Mean-Field and Beyond

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Anomaly in the charge radii of Pb isotopes

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Magnetic multipole moments and transition probabilities of single-particle states around 208pb

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