Effective-interaction approach to the many-boson problem

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dc.creatorChristensson, J.
dc.creatorForssén, C.
dc.creatorÅberg, S.
dc.creatorReimann, S. M.
dc.date2008-02-20
dc.date2009-02-27
dc.date.accessioned2026-07-07T12:46:53Z
dc.date.available2026-07-07T12:46:53Z
dc.descriptionWe show that the convergence behavior of the many-body numerical diagonalization scheme for strongly interacting bosons in a trap can be significantly improved by the Lee-Suzuki method adapted from nuclear physics: One can construct an effective interaction that acts in a space much smaller than the original Hilbert space. In particular for short-ranged forces and strong correlations, the method offers a good estimate of the energy and the excitation spectrum, at a computational cost several orders of magnitude smaller than that required by the standard method.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0802.2811
dc.identifierhttp://arxiv.org/abs/0802.2811
dc.identifierPhys. Rev. A 79, 012707 (2009)
dc.identifierdoi:10.1103/PhysRevA.79.012707
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221534
dc.subjectOther Condensed Matter
dc.subjectNuclear Theory
dc.subjectComputational Physics
dc.titleEffective-interaction approach to the many-boson problem
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