This analysis computes interaction strength in superlattice models, revealing good agreement with measurement data.
We present a method to compute interacting Wannier functions in an optical superlattice for cold atom gas experiments. We start from a noninteracting Wannier function obtained from the band projected position operator method and perform Trotter method to compute the interacting Wannier function. Then, we use this function to compute the on-site interaction strength in a superlattice, compare the result to a measurement, and find good agreement between simulation and data.
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Jens Samland (2025) studied this question.
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