5 papers · 1 filter
The effective ω-meson mass with a vector field self-interaction
Katsuaki Sakamoto, Hiroaki Kouno, Akira Hasegawa +1
We calculate the effective mass m_ω^* of the ω-meson in nuclear medium by the σ-ωmodel with a vector field self-interaction (VFSI). We found that the direct and the indirect effect…
Dispersion relations in quantum hadrodynamics with a finite cutoff
K. Sakamoto, H. Kouno, A. Hasegawa +1
The dispersion relations in the real and imaginary parts of the meson self-energies are studied to check the consistency of the "renormalization" in cutoff field theory. It is show…
Non-perturbative renormalization group equations and approximate discrete gamma_5-symmetry in quantum hadrodynamics
Hiroaki Kouno, Manabu Nakai, Akira Hasegawa +1
The quantum hadrodynamics are studied by using non-perturbative renormalization group equations. Approximate discrete gamma_5-symmetry is studied. It is shown that the contribution…
Properties of nuclear matter in cut-off field theory and renormalization group methods
H. Kouno, T. Mitsumori, Y. Iwasaki +5
The properties of nuclear matter are studied in the cut-off field theory. It is found that, under the Hartree approximation, the small cut-off makes the equations of state hard, es…
Bulk properties of nuclear matter in the relativistic Hartree approximation with cut-off regularization
Kazuharu Koide, Hiroaki Kouno, Akira Hasegawa +1
A method of cut-off regularization is proposed to evaluate vacuum corrections in nuclear matter in the framework of the Hartree approximation. Bulk properties of nuclear matter cal…