Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: from light to superheavy nuclei

Details Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: from light to superheavy nuclei Dynamics of nuclear single-particle structure in covariant theory of particle-vibration coupling: from light to superheavy nuclei

2011-09-19

arxiv.org/abs/1109.3969v1

Phys. Rev. C 84, 014305 (2011)

Physics

Nuclear Physics

Nuclear Theory

14 figures

Scientific paper

The impact of particle-vibration coupling and polarization effects due to deformation and time-odd mean fields on single-particle spectra is studied systematically in doubly magic nuclei from low mass $^{56}$Ni up to superheavy ones. Particle-vibration coupling is treated fully self-consistently within the framework of relativistic particle-vibration coupling model. Polarization effects due to deformation and time-odd mean field induced by odd particle are computed within covariant density functional theory. It has been found that among these contributions the coupling to vibrations makes a major impact on the single-particle structure. The impact of particle-vibration coupling and polarization effects on calculated single-particle spectra, the size of the shell gaps, the spin-orbit splittings and the energy splittings in pseudospin doublets is discussed in detail; these physical observables are compared with experiment. Particle-vibration coupling has to be taken into account when model calculations are compared with experiment since this coupling is responsible for observed fragmentation of experimental levels; experimental spectroscopic factors are reasonably well described in model calculations.

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