Journal
PHYSICAL REVIEW A
Volume 82, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.82.035601
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Funding
- Accion Integrada/Azioni Integrate scheme (Spain/Italy)
- Spanish MICINN [FIS-2007-65723]
- Ramon y Cajal program
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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.
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