Kotoku Sasagane

Higher-order response theory based on the quasienergy derivatives: The derivation of the frequency-dependent polarizabilities and hyperpolarizabilities

Kotoku Sasagane, Fumihiko Aiga, Reikichi Itoh · The Journal of Chemical Physics · 1993 · 218 citations

Spectral Theory, Quasienergy Derivatives, Engineering +14

Frequency-dependent hyperpolarizabilities in the Mo/ller–Plesset perturbation theory

Fumihiko Aiga, Kotoku Sasagane, Reikichi Itoh · The Journal of Chemical Physics · 1993 · 63 citations

Pseudoenergy Derivative, Engineering, Perturbation Method +8

The multiconfiguration time-dependent Hartree–Fock method based on a closed-shell-type multiconfiguration self−consistent field reference state and its application to the LiH molecule

Kotoku Sasagane, Kazuhide Mori, Akira Ichihara et al. · The Journal of Chemical Physics · 1990 · 31 citations

Excited State Property, Physics, Natural Sciences +10

Frequency‐dependent hyperpolarizabilities in the brueckner coupled‐cluster theory

Fumihiko Aiga, Kotoku Sasagane, Reikichi Itoh · International Journal of Quantum Chemistry · 1994 · 29 citations

Spectral Theory, Frequency‐dependent Hyperpolarizabilities, Engineering +12

Calculation of frequency-dependent polarizabilities for open-shell systems at the second-order M�ller-Plesset perturbation theory level based on the quasi-energy derivative method

Takao Kobayashi, Kotoku Sasagane, Kizashi Yamaguchi · International Journal of Quantum Chemistry · 1997 · 26 citations

Spectral Theory, Engineering, Open-shell Systems +20