Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/96081
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Type: Journal article
Title: Finite-volume Hamiltonian method for coupled-channels interactions in lattice QCD
Author: Wu, J.-.J.
Lee, T.-.S.
Thomas, A.
Young, R.
Citation: Physical Review C, 2014; 90(5):055206-1-055206-14
Publisher: APS
Issue Date: 2014
ISSN: 0556-2813
1089-490X
Statement of
Responsibility: 
Jia-Jun Wu, T.-S. H. Lee, A. W. Thomas, and R. D. Young
Abstract: Within 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.
Rights: © 2014 American Physical Society
RMID: 0030015889
DOI: 10.1103/PhysRevC.90.055206
Grant ID: http://purl.org/au-research/grants/arc/FL0992247
http://purl.org/au-research/grants/arc/DP140103067
http://purl.org/au-research/grants/arc/FT120100821
Appears in Collections:Physics publications

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