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dc.contributor.authorDetmold, William
dc.contributor.authorEndres, Michael G.
dc.date.accessioned2014-08-21T19:10:43Z
dc.date.available2014-08-21T19:10:43Z
dc.date.issued2014-08
dc.date.submitted2014-05
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/1721.1/88968
dc.description.abstractWe develop strategies for enhancing the signal/noise ratio for stochastically sampled correlation functions. The techniques are general and offer a wide range of applicability. We demonstrate the potential of the approach with a generic two-state system and then explore the practical applicability of the method for single hadron correlators in lattice quantum chromodynamics. In the latter case, we determine the ground state energies of the pion, proton, and delta baryon, as well as the ground and first excited state energy of the rho meson using matrices of correlators computed on an exemplary ensemble of anisotropic gauge configurations. In the majority of cases, we find a modest reduction in the statistical uncertainties on extracted energies compared to conventional variational techniques. However, in the case of the delta baryon, we achieve a factor of 3 reduction in statistical uncertainties. The variety of outcomes achieved for single hadron correlators illustrates an inherent dependence of the method on the properties of the system under consideration and the operator basis from which the correlators are constructed.en_US
dc.description.sponsorshipUnited States. Dept. of Energy (Cooperative Research Agreement DE-FG02-94ER40818)en_US
dc.description.sponsorshipUnited States. Dept. of Energy (Early Career Research Award DE-SC0010495)en_US
dc.description.sponsorshipSolomon Buchsbaum AT&T Research Funden_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevD.90.034503en_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.sourceAmerican Physical Societyen_US
dc.titleSignal/noise enhancement strategies for stochastically estimated correlation functionsen_US
dc.typeArticleen_US
dc.identifier.citationDetmold, William, and Michael G. Endres. "Signal/noise enhancement strategies for stochastically estimated correlation functions." Phys. Rev. D 90, 034503 (August 2014). © 2014 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Center for Theoretical Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorDetmold, Williamen_US
dc.contributor.mitauthorEndres, Michael G.en_US
dc.relation.journalPhysical Review Den_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2014-08-18T22:00:20Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsDetmold, William; Endres, Michael G.en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-1411-360X
dc.identifier.orcidhttps://orcid.org/0000-0002-0400-8363
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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