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arXiv · 2406.09019

Ground state energy of a dilute Bose gas with three-body hard-core interactions

Lukas Junge·François Louis Antoine Visconti
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Abstract

We consider a gas of bosons interacting through a three-body hard-core potential in the thermodynamic limit. We derive an upper bound on the ground state energy of the system at the leading order using a Jastrow factor. Our result matches the lower bound proven by Nam-Ricaud-Triay and therefore resolves the leading order. Moreover, a straightforward adaptation of our proof can be used for systems interacting via combined two-body and three-body interactions to generalise Theorem 1.2. from arXiv:2402.05646 to hard-core potentials.

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Lukas Junge, François Louis Antoine Visconti. 2024-06-13. Ground state energy of a dilute Bose gas with three-body hard-core interactions. https://arxiv.org/abs/2406.09019

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