Quasiparticle coupled cluster theory for pairing interactions

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dc.citation.firstpage54305
dc.citation.issueNumber5
dc.citation.journalTitlePhysical Review C
dc.citation.volumeNumber89
dc.contributor.authorHenderson, Thomas M.
dc.contributor.authorScuseria, Gustavo E.
dc.contributor.authorDukelsky, Jorge
dc.contributor.authorSignoracci, Angelo
dc.contributor.authorDuguet, Thomas
dc.date.accessioned2016-01-29T20:03:39Z
dc.date.available2016-01-29T20:03:39Z
dc.date.issued2014
dc.description.abstractWe present an extension of the pair coupled cluster doubles (p-CCD) method to quasiparticles and apply it to the attractive pairing Hamiltonian. Near the transition point where number symmetry gets spontaneously broken, the proposed BCS-based p-CCD method yields significantly better energies than existing methods when compared to exact results obtained via solution of the Richardson equations. The quasiparticle p-CCD method has a low computational cost of O(N3) as a function of system size. This together with the high quality of results here demonstrated, points to considerable promise for the accurate description of strongly correlated systems with more realistic pairing interactions.
dc.identifier.citationHenderson, Thomas M., Scuseria, Gustavo E., Dukelsky, Jorge, et al.. "Quasiparticle coupled cluster theory for pairing interactions." <i>Physical Review C,</i> 89, no. 5 (2014) American Physical Society: 054305. http://dx.doi.org/10.1103/PhysRevC.89.054305.
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevC.89.054305
dc.identifier.urihttps://hdl.handle.net/1911/88271
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleQuasiparticle coupled cluster theory for pairing interactions
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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