Research theme

We are also developing the complex coordinate method for resonance states appearing in electron-molecule systems and molecular photoionizations in intense laser fields.

We are constructing a theory to explain the interesting behavior of overtone vibration intensity of simple molecules based on the local mode picture.

Using the spin-dependent unitary group approach, the time-reversal symmetry, and double group symmetries, we have developed highly efficient spin-orbit configuration interaction method including relativistic effects for quantum chemical calculations of various molecular systems. We have applied particularly to nonadiabatic processes in chemical reactions in electronic excited states and/or at dissociation regions.