4 papers · 1 filter
Coleman-Weinberg mechanism for spontaneous chiral symmetry breaking in the massless chiral sigma model
Setsuo Tamenaga, Hiroshi Toki, Akihiro Haga +1
We study the effect of one-loop corrections from nucleon together with those from boson in the massless chiral sigma model, where we perform the Coleman-Weinberg renormalization pr…
Collective excitations and energy-weighted sum rules in relativistic random phase approximation with vacuum polarization
A. Haga, H. Toki, S. Tamenaga +1
The isoscalar and isovector collective multipole excitations in stable nuclei are studied in the framework of relativistic random-phase approximation with the vacuum polarization a…
Self-consistent relativistic random phase approximation with vacuum polarization
A. Haga, H. Toki, S. Tamenaga +2
We present a theoretical formulation for the description of nuclear excitations within the framework of relativistic random-phase approximation whereby the vacuum polarization aris…
Relativistic Hartree approach with exact treatment of vacuum polarization for finite nuclei
Akihiro Haga, Setsuo Tamenaga, Hiroshi Toki +1
We study the relativistic Hartree approach with the exact treatment of the vacuum polarization in the Walecka sigma-omega model. The contribution from the vacuum polarization of nu…