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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/192738
Towards a Quantum Monte Carlo-based density functional including finite-range effects: Excitation modes of a 39K quantum droplet
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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.
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CIKOJEVIC, Viktor, et al. Towards a Quantum Monte Carlo-based density functional including finite-range effects: Excitation modes of a 39K quantum droplet. Physical Review A. 2020. Vol. 102, num. 1-8. ISSN 2469-9926. [consulted: 8 of August of 2026]. Available at: https://hdl.handle.net/2445/192738