Naslov
Structure of Halo and Quasi-halo Helium-Helium-Alkali Trimers

Autori
Stipanović, Petar ; Vranješ Markić, Leandra ; Boronat, Jordi

Izvornik
Few-body systems (0177-7963) 58 (2017), 3; 123, 5

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

Ključne riječi
halo states ; three-body ; helium-alkali clusters ; structure ; quantum Monte Carlo

Sažetak
We report a diffusion Monte Carlo study of A 4He2 and A 4He 3He trimers’ structural properties, were A is one of the alkali atoms 6, 7Li, 23Na, 39K, 85Rb or 133Cs. Some of them are in a pure halo state, characterized by large spatial extent and universality, while some are close to the halo limit. The theoretical analysis of these trimers enables insight on how structural properties of weakly bound systems change when approaching the halo edge. For that purpose, two-variable distributions of inter-particle separations and angles were calculated. Extreme spatial extensions of some trimers with 3He confirm their halo nature. Although all the considered systems are floppy, trimers with all bound dimer subsystems are less spread and have significantly lower percentage of quasi-linear configurations than those which have at least one unbound dimer subsystem.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA