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Ground state of small mixed helium and spin-polarized tritium clusters: A quantum Monte Carlo study
dc.contributor.author | Stipanovic, P. |
dc.contributor.author | Markic, L. Vranjes |
dc.contributor.author | Boronat Medico, Jordi |
dc.contributor.author | Kezic, B. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
dc.date.accessioned | 2011-04-05T18:07:21Z |
dc.date.available | 2011-04-05T18:07:21Z |
dc.date.created | 2011-02-07 |
dc.date.issued | 2011-02-07 |
dc.identifier.citation | Stipanovic, P. [et al.]. Ground state of small mixed helium and spin-polarized tritium clusters: A quantum Monte Carlo study. "Journal of chemical physics", 07 Febrer 2011, vol. 134, núm. 5, p. 054509-1-054509-8. |
dc.identifier.issn | 0021-9606 |
dc.identifier.uri | http://hdl.handle.net/2117/12258 |
dc.description.abstract | We report results for the ground-state energy and structural properties of small 4He–T↓ clusters consisting of up to four T↓ and eight 4He atoms. These results have been obtained using very well-known 4He–4He and T↓– T↓ interaction potentials and several models for the 4He– T↓ interatomic potential. All the calculations have been performed with variational and diffusion Monte Carlo methods. It takes at least three atoms to form a mixed bound state. In particular, for small clusters the binding energies are significantly affected by the precise form of the 4He– T↓ interatomic potential but the stability limits remain unchanged. The only exception is the 4He2T↓ trimer whose stability in the case of the weakest 4He– T↓ interaction potential is uncertain while it seems stable for other potentials. The mixed trimer 4He(T↓)2, a candidate for the Borromean state, is not bound. All other studied clusters are stable. Some of the weakest bound clusters can be classified as quantum halo as a consequence of having high probability of being in a classically forbidden region. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Monte Carlo method |
dc.title | Ground state of small mixed helium and spin-polarized tritium clusters: A quantum Monte Carlo study |
dc.type | Article |
dc.subject.lemac | Monte Carlo, Mètode de |
dc.contributor.group | Universitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity |
dc.identifier.doi | 10.1063/1.3530837 |
dc.relation.publisherversion | http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JCPSA6000134000005054509000001&idtype=cvips&doi=10.1063/1.3530837&prog=normal |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 5414308 |
dc.description.version | Postprint (published version) |
local.citation.author | Stipanovic, P.; Markic, L.; Boronat, J.; Kezic, B. |
local.citation.publicationName | Journal of chemical physics |
local.citation.volume | 134 |
local.citation.number | 5 |
local.citation.startingPage | 054509-1 |
local.citation.endingPage | 054509-8 |
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