Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equation
Abstract
Dipolar quantum droplets are exotic quantum objects that are self-bound due to the subtle balance of attraction, repulsion and quantum correlations. Here we present a systematic study of the critical atom number of these self-bound droplets, comparing the experimental results with extended mean-field Gross-Pitaevskii equation (eGPE) and quantum Monte-Carlo simulations of the dilute system. The respective theoretical predictions differ, questioning the validity of the current theoretical state-of-the-art description of quantum droplets within the eGPE framework and indicating that correlations in the system are significant. Furthermore, we show that our system can serve as a sensitive testing ground for many-body theories in the near future.
Keywords
Cite
@article{arxiv.1904.10349,
title = {Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equation},
author = {Fabian Böttcher and Matthias Wenzel and Jan-Niklas Schmidt and Mingyang Guo and Tim Langen and Igor Ferrier-Barbut and Tilman Pfau and Raúl Bombín and Joan Sánchez-Baena and Jordi Boronat and Ferran Mazzanti},
journal= {arXiv preprint arXiv:1904.10349},
year = {2019}
}