Naslov
Universality in molecular halo clusters

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

Izvornik
Physical Review Letters (0031-9007) 113 (2014), 25; 253401-253405

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

Ključne riječi
Quantum halos; Quantum Monte Carlo; dimers; trimers

Sažetak
Ground state of weakly bound dimers and trimers with a radius extending well into the classically forbidden region is explored, with the goal to test the predicted universality of quantum halo states. The focus of the study are molecules consisting of T\downarrow, D\downarrow, 3He, 4He and alkali atoms, where interaction between particles is much better known than in the case of nuclei, which are traditional examples of quantum halos. The study of realistic systems is supplemented by model calculations in order to analyze how low- energy properties depend on the interaction potential. The use of variational and diffusion Monte Carlo methods enabled very precise calculation of both size and binding energy of the trimers. In the quantum halo regime, and for large values of scaled binding energies, all clusters follow almost the same universal line. As the scaled binding energy decreases, Borromean states separate from tango trimers.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA