Cikojevic, ViktorVranje Markic, L.Pi Pericay, MartíBarranco Gómez, ManuelBoronat Medico, Jordi2023-01-272023-01-272020-09-232469-9926https://hdl.handle.net/2445/192738Some discrepancies between experimental results on quantum droplets made of a mixture of 39K atoms in different hyperfine states and their analysis within extended Gross-Pitaevskii theory (which incorporates beyond mean-field corrections) have been recently solved by introducing finite-range effects into the theory. Here we study the influence of these effects on the monopole and quadrupole excitation spectrum of extremely dilute quantum droplets using a density functional built from first-principles quantum Monte Carlo calculations, which can be easily introduced in the existing Gross-Pitaevskii numerical solvers. Our results show differences of up to 20% with those obtained within the extended Gross-Pitaevskii theory, likely providing another way to observe finite-range effects in mixed quantum droplets by measuring their lowest excitation frequencies.8 p.application/pdfeng(c) American Physical Society, 2020Matèria condensadaCondensació de Bose-EinsteinMesclesCondensed matterBose-Einstein condensationMixturesinfo:eu-repo/semantics/article7035092023-01-27info:eu-repo/semantics/openAccess