Finite-volume Hamiltonian method for coupled-channels interactions in lattice QCD

dc.contributor.authorWu, J.-J.
dc.contributor.authorLee, T.-S.
dc.contributor.authorThomas, A.
dc.contributor.authorYoung, R.
dc.date.issued2014
dc.description.abstractWithin a multichannel formulation of ππ scattering, we investigate the use of the finite-volume Hamiltonian approach to resolve scattering observables from lattice QCD spectra. The asymptotic matching of the well-known L¨uscher formalism encodes a unique finite-volume spectrum. Nevertheless, in many practical situations, such as coupled-channels systems, it is advantageous to interpolate isolated lattice spectra in order to extract physical scattering parameters. Here we study the use of the Hamiltonian framework as a parametrization that can be fit directly to lattice spectra. We find that, with a modest amount of lattice data, the scattering parameters can be reproduced rather well, with only a minor degree of model dependence.
dc.description.statementofresponsibilityJia-Jun Wu, T.-S. H. Lee, A. W. Thomas, and R. D. Young
dc.identifier.citationPhysical Review C: Nuclear Physics, 2014; 90(5):055206-1-055206-14
dc.identifier.doi10.1103/PhysRevC.90.055206
dc.identifier.issn0556-2813
dc.identifier.issn1089-490X
dc.identifier.orcidThomas, A. [0000-0003-0026-499X]
dc.identifier.orcidYoung, R. [0000-0002-4527-1811]
dc.identifier.urihttp://hdl.handle.net/2440/96081
dc.language.isoen
dc.publisherAPS
dc.relation.granthttp://purl.org/au-research/grants/arc/FL0992247
dc.relation.granthttp://purl.org/au-research/grants/arc/DP140103067
dc.relation.granthttp://purl.org/au-research/grants/arc/FT120100821
dc.rights© 2014 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevc.90.055206
dc.titleFinite-volume Hamiltonian method for coupled-channels interactions in lattice QCD
dc.typeJournal article
pubs.publication-statusPublished

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