Hartree-Fock dynamical electron-correlation effects in C60 after laser excitation.
In the static Hartree-Fock limit, the on-site electron-electron interaction has no effect on the electronic properties of C60. But upon the laser excitation, the dynamical correlation effect appears. The time-dependent Hartree-Fock simulation through the Hubbard model shows that such an effect originates from the charge fluctuation, but an increase in the on-site electron-electron interaction suppresses the charge fluctuation and reduces the absorbed energy and the bond structure distortion.
Zhang
G P
GP
Department of Physics, Indiana State University, Terre Haute, IN 47809, USA.