Quasiparticle coupled cluster theory for pairing interactions

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dc.citation.firstpage54305en_US
dc.citation.issueNumber5en_US
dc.citation.journalTitlePhysical Review Cen_US
dc.citation.volumeNumber89en_US
dc.contributor.authorHenderson, Thomas M.en_US
dc.contributor.authorScuseria, Gustavo E.en_US
dc.contributor.authorDukelsky, Jorgeen_US
dc.contributor.authorSignoracci, Angeloen_US
dc.contributor.authorDuguet, Thomasen_US
dc.date.accessioned2016-01-29T20:03:39Zen_US
dc.date.available2016-01-29T20:03:39Zen_US
dc.date.issued2014en_US
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.en_US
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.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevC.89.054305en_US
dc.identifier.urihttps://hdl.handle.net/1911/88271en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
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.en_US
dc.titleQuasiparticle coupled cluster theory for pairing interactionsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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