arXiv:2407.06419
Universal relations in Bose gases with power-law interactions in two and three dimensions
Nina S. Voronova, Elena V. Skirdova, I. L. Kurbakov, G. E. Astrakharchik
Abstract
We derive universal relations between thermodynamic quantities and the pair distribution function for bosons interacting via power-law interactions in three and two dimensions. We find beyond mean-field expressions for Tan's contact and establish new connections between the chemical potential and potential energy per particle, characteristic of systems with finite-range interactions. The obtained results are relevant for dipoles, quadrupoles, Rydberg atoms, excitons, van der Waals atoms, and other systems in the dilute limit.