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Abstract: We study how the bosonic atoms on the excited p-band of an optical latticeare coupled to the lowest s-band and the 2nd excited d-band. We find that insome parameter regimes the atom-atom interactions can cause a dynamicalinstability of the p-band atoms towards decay to the s- and d-bands.Furthermore, even when dynamical instability is not expected s- and d-bands canbecome substantially populated.



Autor: J.-P. Martikainen

Fuente: https://arxiv.org/







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