  Suppression of electron motion under an alternating current (AC) electric
field is examined in a one-dimensional Hubbard model. Utilizing three
complementary calculation methods, it is found unambiguously that magnitudes of
the kinetic-energy suppressions are influenced sensitively by the Coulomb
interaction as well as the electron density. The phase and frequency in the AC
field do not bring about major effects. The results are interpreted as a
combined effect of the Coulomb interaction and the AC field, and provide a
guiding principle for the photocontrol of correlated electron motion.

Strongly Correlated Electrons