Elastic scattering of positronium: Application of the confined variational method

Handle URI:
http://hdl.handle.net/10754/562268
Title:
Elastic scattering of positronium: Application of the confined variational method
Authors:
Zhang, Junyi; Yan, Zong-Chao; Schwingenschlögl, Udo ( 0000-0003-4179-7231 )
Abstract:
We demonstrate for the first time that the phase shift in elastic positronium-atom scattering can be precisely determined by the confined variational method, in spite of the fact that the Hamiltonian includes an unphysical confining potential acting on the center of mass of the positron and one of the atomic electrons. As an example, we study the S-wave elastic scattering for the positronium-hydrogen scattering system, where the existing 4% discrepancy between the Kohn variational calculation and the R-matrix calculation is resolved. © Copyright EPLA, 2012.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)
Publisher:
IOP Publishing
Journal:
EPL (Europhysics Letters)
Issue Date:
1-Aug-2012
DOI:
10.1209/0295-5075/99/43001
Type:
Article
ISSN:
02955075
Sponsors:
The authors are thankful for the computational resources provided by ACEnet of Canada and HPC of KAUST. Z-CY was supported by NSERC of Canada and in part by the Chinese Academy of Sciences CAS/SAFEA International Partnership Program for Creative Research Teams.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Junyien
dc.contributor.authorYan, Zong-Chaoen
dc.contributor.authorSchwingenschlögl, Udoen
dc.date.accessioned2015-08-03T09:58:44Zen
dc.date.available2015-08-03T09:58:44Zen
dc.date.issued2012-08-01en
dc.identifier.issn02955075en
dc.identifier.doi10.1209/0295-5075/99/43001en
dc.identifier.urihttp://hdl.handle.net/10754/562268en
dc.description.abstractWe demonstrate for the first time that the phase shift in elastic positronium-atom scattering can be precisely determined by the confined variational method, in spite of the fact that the Hamiltonian includes an unphysical confining potential acting on the center of mass of the positron and one of the atomic electrons. As an example, we study the S-wave elastic scattering for the positronium-hydrogen scattering system, where the existing 4% discrepancy between the Kohn variational calculation and the R-matrix calculation is resolved. © Copyright EPLA, 2012.en
dc.description.sponsorshipThe authors are thankful for the computational resources provided by ACEnet of Canada and HPC of KAUST. Z-CY was supported by NSERC of Canada and in part by the Chinese Academy of Sciences CAS/SAFEA International Partnership Program for Creative Research Teams.en
dc.publisherIOP Publishingen
dc.titleElastic scattering of positronium: Application of the confined variational methoden
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentComputational Physics and Materials Science (CPMS)en
dc.identifier.journalEPL (Europhysics Letters)en
dc.contributor.institutionCenter for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, Chinaen
dc.contributor.institutionDepartment of Physics, University of New Brunswick, Fredericton, NB E3B 5A3, Canadaen
kaust.authorZhang, Junyien
kaust.authorSchwingenschlögl, Udoen
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