Fermion pairing in body-centered-cubic quantum simulators of extended Hubbard models

Ganiyu D. Adebanjo; P. E. Kornilovitch; J. P. Hague

doi:10.1016/j.physleta.2021.127704

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arXiv · 2102.07744

Fermion pairing in body-centered-cubic quantum simulators of extended Hubbard models

Ganiyu D. Adebanjo·P. E. Kornilovitch·J. P. Hague

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Abstract

We investigate formation and condensation of fermion pairs in cold-atom quantum simulators for extended Hubbard models ($UV$ models) with body-centered-cubic (BCC) optical lattices in the dilute limit, predicting small and light pairs. Pair mass, radius, and binding conditions are calculated, and used to compute transition temperatures. We predict that: (a) local pairs form in BCC optical lattices and binding energies can be large; (b) for particular cases where onsite $U$ and intersite $V$ are attractive with similar size, pairs are both small and light; and (c) pairs of $^6$Li atoms Bose--Einstein condense at temperatures of around 10 nK.

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Ganiyu D. Adebanjo, P. E. Kornilovitch, J. P. Hague. 2021-02-15. Fermion pairing in body-centered-cubic quantum simulators of extended Hubbard models. https://doi.org/10.1016/j.physleta.2021.127704

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