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arXiv · 0910.0914

Resonance Scattering in Optical Lattices and Molecules: Interband versus Intraband Effects

Xiaoling Cui·Yupeng Wang·Fei Zhou
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Abstract

We study the low-energy two-body scattering in optical lattices with all higher-band effects included in an effective potential, using a renormalization group approach. As the potential depth reaches a certain value, a resonance of low energy scattering occurs even when the negative s-wave scattering length $(a_s)$ is much shorter than the lattice constant. These resonances can be mainly driven either by interband or intraband effects or by both, depending on the magnitude of $a_s$. Furthermore the low-energy scattering matrix in optical lattices has a much stronger energy-dependence than that in free space. We also investigate the momentum distribution for molecules when released from optical lattices.

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Xiaoling Cui, Yupeng Wang, Fei Zhou. 2010-03-25. Resonance Scattering in Optical Lattices and Molecules: Interband versus Intraband Effects. https://doi.org/10.1103/physrevlett.104.153201

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