8 papers
Electronic Properties of Transuranium Compounds with HoCoGa-Type Tetragonal Crystal Structure
Takahiro Maehira, Takashi Hotta, Kazuo Ueda +1
By using a relativistic linear augmented-plane-wave method with the one-electron potential in the local-density approximation, we investigate energy band structures and the Fermi s…
Relativistic Band-Structure Calculations for CeTIn(T=Ir and Co)
T. Maehira, T. Hotta, K. Ueda +1
In order to investigate electronic properties of recently discovered heavy fermion superconductors CeTIn (T=Ir and Co), we employ the relativistic linear augmented-plane-wave (…
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…
Nonlinear effects in Schwinger-Dyson Equation
Hiroaki Kouno, Akira Hasegawa, Masahiro Nakano +1
We study nonlinear effects in the QED ladder Schwinger-Dyson(SD) equation. Without further approximations, we show that all nonlinear effects in the ladder SD equation can be inclu…
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…