2026-04-13T16:46:26Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3350772026-01-28T02:01:34Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Ota, Miki author Astrakharchik, Grigori author 2020-08-18 We investigate the properties of self-bound ultradilute Bose-Bose mixtures, beyond the Lee-Huang-Yang description. Our approach is based on the determination of the beyond mean-field corrections to the phonon modes of the mixture in a self-consistent way and calculation of the associated equation of state. The newly obtained ground state energies show excellent agreement with recent quantum Monte Carlo calculations, providing a simple and accurate description of the self-bound mixtures with contact type interaction. We further show numerical results for the equilibrium properties of the finite size droplet, by adjusting the Gross-Pitaevskii equation. Our analysis is extended to the one-dimensional mixtures where an excellent agreement with quantum Monte Carlo predictions is found for the equilibrium densities. Finally, we discuss the effects of temperature on the stability of the liquid phase. Postprint (published version) Àrees temàtiques de la UPC::Física Bosons Monte Carlo method Gross-Pitaevskii equation Quantum Monte Carlo simulations Bosons Montecarlo, Mètode de Beyond Lee-Huang-Yang description of self-bound Bose mixtures