# Nonlinear polarization evolution using time-dependent density functional theory.

@article{Uemoto2019NonlinearPE, title={Nonlinear polarization evolution using time-dependent density functional theory.}, author={Mitsuharu Uemoto and Yukichi Kuwabara and Shunsuke A. Sato and Kazuhiro Yabana}, journal={The Journal of chemical physics}, year={2019}, volume={150 9}, pages={ 094101 } }

We propose a theoretical and computational approach to investigate temporal behavior of a nonlinear polarization in a perturbative regime induced by an intense and ultrashort pulsed electric field. First-principles time-dependent density functional theory is employed to describe the electron dynamics. Temporal evolution of third-order nonlinear polarization is extracted from a few calculations of electron dynamics induced by pulsed electric fields with the same time profile but different…

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