Naslov
Four-body universality which extends from classical to quantum systems

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

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts EGAS52 Virtual Conference / Buhin, Danijel - Zagreb, 2021, 214-214

Skup
52nd Conference of the European Group on Atomic Systems (EGAS)

Mjesto i datum
Zagreb, Hrvatska, 06.07.2021. - 08.07.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Van der Waals systems, universality, four-body, atomic clusters, ground state

Sažetak
Universal relationship of scaled size and scaled energy, which was previously established for two- and three-body systems in their ground halo state, is examined for four-body systems. Four-body exact ground-state estimate of self-binding is obtained by the diffusion Monte Carlo method, while structural properties are extracted by pure estimators. Previously in the case of helium trimers, a similar approach enabled comparison of theoretically predicted structural properties with the most recent experimental results, which were obtained by Coulomb explosion imaging of diffracted helium clusters. A detailed study was performed in the halo region, where systems are extremely weakly bound and prefer more to be in classically forbidden regions. Strengthening the inter-particle interaction we extend the exploration all the way to classical systems. Different scaling length were tested and universal size-energy law has been found for homogeneous tetramers in the case of interaction potentials decaying predominantly as $r^{; ; -6}; ; $. The universal size-energy line is also applicable to mixed four-body systems, if their structure is homogeneous-like.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA