Naslov
Finite-range effects in ultradilute quantum drops

Autori
Cikojević, Viktor ; Vranješ Markić, Leandra ; Boronat, Jordi

Izvornik
New journal of physics (1367-2630) 22 (2020); 053045, 10

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
BEC gases ; Bose mixtures ; quantum Monte Carlo

Sažetak
In the first experimental realization of dilute Bose–Bose liquid drops using two hyperfine states of 39K some discrepancies between theory and experiment were observed. The standard analysis of the data using the Lee–Huang–Yang beyond mean-field theory predicted critical numbers which were significantly off the experimental measurements. Also, the radial size of the drops in the experiment proved to be larger than expected from this theory. Using a new functional, which is based on quantum Monte Carlo results of the bulk phase incorporating finite-range effects, we can explain the origin of the discrepancies in the critical number. This result proves the necessity of including finite-range corrections to deal with the observed properties in this setup. The controversy on the radial size is reasoned in terms of the departure from the optimal concentration ratio between the two species of the mixture.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA