title: Efficient algorithm for calculating two-photon absorption spectra.
abstract: We propose an efficient time-dependent algorithm for nonlinear response function that requires CPU time proportional to the system size, and study the size effects in two-photon absorption spectra of Si nanocrystallites by using this algorithm.
authors.affiliation: The Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Iitaka
authors.forename: T
authors.initials: T
authors.lastname: Ebisuzaki