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arXiv · 2303.12637

Universality of isolated $N$-body resonances at large scattering length

Ludovic Pricoupenko
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Abstract

Non Efimovian $N$-body resonances are investigated in the regime of a large two-body s wave scattering length. In view of a universal description of low-energy bound and quasi-bound states, a contact model is introduced. The modeling requires two parameters in addition to the scattering length. Using a modified scalar product, the contact model provides a normalization of bound states, possibly not square-integrable, that coincides with that of the corresponding finite range model.

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Ludovic Pricoupenko. 2023-03-22. Universality of isolated $N$-body resonances at large scattering length. https://doi.org/10.1103/physreva.108.013315

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