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dc.contributor.authorAbdel-Rehim, Abdou
dc.contributor.authorAlexandrou, Constantia
dc.contributor.authorBerlin, Joshua
dc.contributor.authorDalla Brida, Mattia
dc.contributor.authorFinkenrath, Jacob
dc.contributor.authorWagner, Marc
dc.creator
dc.date.accessioned2017-07-18T19:37:20Z
dc.date.available2017-07-18T19:37:20Z
dc.date.issued2017-07-11
dc.identifier.citationAbdel-Rehim, A., Alexandrou, C., Berlin, J., Brida, M. D., Finkenrath, J., & Wagner, M. (2017). Investigating efficient methods for computing four-quark correlation functions. Computer Physics Communications. doi:10.1016/j.cpc.2017.06.021en_US
dc.identifier.issn0010-4655
dc.identifier.urihttp://hdl.handle.net/1951/69326
dc.description.abstractWe discuss and compare the efficiency of various methods, combinations of point-to-all propagators, stochastic timeslice-to-all propagators, the one-end trick and sequential propagators, to compute two-point correlation functions of two-quark and four-quark interpolating operators of different structure including quark-antiquark type, mesonic molecule type, diquark-antidiquark type and two-meson type. Although we illustrate our methods in the context of the a0(980), they can be applied for other multi-quark systems, where similar diagrams appear. Thus our results could provide helpful guidelines on the choice of methods for correlation function computation for future lattice QCD studies of meson-meson scattering and possibly existing tetraquark states.en_US
dc.description.sponsorshipComputation-based Science and Technology Research Center, The Cyprus Institute, 20 Kavafi Street, 2121 Nicosia, Cyprus Department of Engineering, Science and Mathematics SUNY Polytechnic Institute, Utica, New York 13502, USA Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus Goethe-Universitat Frankfurt am Main, Institut fur Theoretische Physik, Max-von-Laue-Strasse 1, D-60438 Frankfurt am Main, Germany Dipartimento di Fisica, Universita di Milano-Bicocca & INFN, sezione di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy Emmy Noether Programme of the DFG (German Research Foundation), grant WA 3000/1-1 Helmholtz International Center for FAIR within the framework of the LOEWE program, State of Hesse European Regional Development Fund and the Republic of Cyprus through the Research Promotion Foundation by the grand cypro914en_US
dc.language.isoenen_US
dc.publisherComputer Physics Communicationsen_US
dc.subjectcorrelation functionsen_US
dc.subjectpropagatorsen_US
dc.subjectmulti-quark systemsen_US
dc.subjectlattice QCDen_US
dc.subjectmeson-meson scatteringen_US
dc.subjecttetraquark statesen_US
dc.subjectfour-quark statesen_US
dc.subjectinterpolating operatorsen_US
dc.titleInvestigating efficient methods for computing four-quark correlation functionsen_US
dc.title.alternativeComputer Physics Communicationsen_US
dc.typeArticleen_US


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