%0 Journal Article
%A Creffield, Charles
%A Sols Lucía, Fernando
%A Ciampini, D.
%A Morsch, O.
%A Arimondo, E.
%T Expansion of matter waves in static and driven periodic potentials
%D 2014
%@ 1050-2947
%U https://hdl.handle.net/20.500.14352/34845
%X We study the nonequilibrium dynamics of cold atoms held in an optical lattice subjected to a periodic driving potential. The expansion of an initially confined atom cloud occurs in two phases: an initial quadratic expansion followed by a ballistic behavior at long times. Accounting for this gives a good description of recent experimental results and provides a robust method to extract the effective intersite tunneling from time-of-flight measurements.
%~