Universality of atomic trimers in quantum halo states (CROSBI ID 639937)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Stipanović, Petar ; Vranješ Markić, Leandra ; Bešlić, Ivana ; Boronat, Jordi
engleski
Universality of atomic trimers in quantum halo states
The results of the recent research in quantum halo systems will be presented. Ground state of weakly bound 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$\downarrow$, $^3$He, $^4$He 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. Using dimensionless measures of the binding energy and cluster size, studied atomic clusters are compared to other known halos in different fields of physics. 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. Furthermore, the structure of different trimers are compared using different distribution functions.
universality ; quantum halo state ; dimer ; trimer ; teramer
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
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Podaci o prilogu
2015.
objavljeno
Podaci o matičnoj publikaciji
School in Computational Condensed Matter Physics: From Atomistic Simulations to Universal Model Hamiltonians
Podaci o skupu
School in Computational Condensed Matter Physics: From Atomistic Simulations to Universal Model Hamiltonians
poster
07.09.2015-25.09.2015
Trst, Italija