Pregled bibliografske jedinice broj: 93409
Helium Molecules in Two and Quasi-Two Dimensions
Helium Molecules in Two and Quasi-Two Dimensions // Quantum Simulations of Complex Many-Body Systems:From Theory to Algorithms / Grotendorst, Johannes; Marx, Dominik; Muramatsu, Alejandro (ur.).
Jülich: John von Neumann Institute for Computing, 2002. str. 27-27 (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 93409 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Helium Molecules in Two and Quasi-Two Dimensions
Autori
Vranješ, Leandra ; Kilić, Srećko
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Quantum Simulations of Complex Many-Body Systems:From Theory to Algorithms
/ Grotendorst, Johannes; Marx, Dominik; Muramatsu, Alejandro - Jülich : John von Neumann Institute for Computing, 2002, 27-27
Skup
Euro Winter School, Quantum Simulations of Complex Many-Body Systems:From Theory to Algorithms
Mjesto i datum
Kerkrade, Nizozemska, 25.02.2002. - 01.03.2002
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
helium; molecules; two-dimensions; binding
(helium; molecules; two dimensions; binding)
Sažetak
The ground state properties of helium molecules in infinite and restricted 2- and quasi 2-dimensional (2D) space are studied. Using Monte Carlo calculation in two successive stages, VMC (simple variational Monte Carlo) and DMC (diffusion Monte Carlo) we find that all studied molecules (except ^3He_3 with spin-3/2) are bound in 2D. It is discovered that in infinite 2D space ^3He trimer prefers the structure of one dimer and one separate particle while a composition of two separate dimers is preferable for ^3He tetramer. In holding potentials with well adjusted parameters there is a drastic increase of binding for trimer and tetramer in both sorts of helium atoms.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
