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http://hdl.handle.net/2445/192738
Title: | Towards a Quantum Monte Carlo-based density functional including finite-range effects: Excitation modes of a 39K quantum droplet |
Author: | Cikojevic, Viktor Vranje Markic, L. Pi Pericay, Martí Barranco Gómez, Manuel Boronat Medico, Jordi |
Keywords: | Matèria condensada Condensació de Bose-Einstein Mescles Condensed matter Bose-Einstein condensation Mixtures |
Issue Date: | 23-Sep-2020 |
Publisher: | American Physical Society |
Abstract: | Some 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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevA.102.033335 |
It is part of: | Physical Review A, 2020, vol. 102, p. 1-8 |
URI: | http://hdl.handle.net/2445/192738 |
Related resource: | https://doi.org/10.1103/PhysRevA.102.033335 |
ISSN: | 2469-9926 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB)) |
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