26 citations · 136 across the 37 of their papers we have counts for
37 papers
Path integral and Sommerfeld quantization
Mikoto Matsuda, Takehisa Fujita
The path integral formulation can reproduce the right energy spectrum of the harmonic oscillator potential, but it cannot resolve the Coulomb potential problem. This is because the…
Nuclear Potential with Two Pion Exchange
Takehisa Fujita, Naohiro Kanda, Sachiko Oshima
We carefully calculate the nucleon-nucleon interaction due to two pion exchange processes by properly evaluating the corresponding Feynman diagrams. In the estimation, we have made…
A Proposal to Measure Photon-Photon Scattering
Takehisa Fujita, Naohiro Kanda
We discuss a possibility to measure the photon-photon scattering cross section at low energy in a theoretical standpoint. The cross section of photon-photon scattering at low energ…
Electric Dipole Moments of Neutron-Odd Nuclei
Takehisa Fujita, Sachiko Oshima
The electric dipole moments (EDMs) of neutron-odd nuclei with even protons are systematically evaluated. We first derive the relation between the EDM and the magnetic moment operat…
Tomonaga's Conjecture on Photon Self-Energy
Takehisa Fujita, Naohiro Kanda
We investigate Tomonaga's conjecture that the self-energy of photon should vanish to zero. In fact, the contribution of photon's self-energy diagram violates the Lorentz invariance…
A New Relation between Lamb Shift Energies
Hiroaki Kubo, Takehisa Fujita, Naohiro Kanda +4
We derive a new relation between the observed Lamb shift energies of hydrogen and muonium atoms. The relation is based on the non-relativistic description of the Lamb shift, and th…