Taste violations in the scalar correlator in mixed action simulations

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We study the behavior of the isovector scalar correlator, which is particularly sensitive to lattice artifacts, using domain-wall valence quarks on a staggered sea (generated by the MILC collaboration). We analyze this according to the prediction from chiral perturbation theory determined by Prelovsek, which indicates that the leading unitarity violations come from taste breaking effects. We show that our data behaves in the way predicted by Prelovsek, thus verifying that the largest contribution to the violations of unitarity which arise at finite lattice spacing can be described by the mixed-action chiral perturbation theory.

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7 pages

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Aubin, C.; Coll., /Columbia U. /William-Mary; Laiho, Jack; /Fermilab /Washington U., St. Louis; Van de Water, Ruth S. & /Fermilab October 1, 2007.

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Description

We study the behavior of the isovector scalar correlator, which is particularly sensitive to lattice artifacts, using domain-wall valence quarks on a staggered sea (generated by the MILC collaboration). We analyze this according to the prediction from chiral perturbation theory determined by Prelovsek, which indicates that the leading unitarity violations come from taste breaking effects. We show that our data behaves in the way predicted by Prelovsek, thus verifying that the largest contribution to the violations of unitarity which arise at finite lattice spacing can be described by the mixed-action chiral perturbation theory.

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7 pages

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  • Presented at 25th International Symposium on Lattice Field Theory, Regensburg, Germany, 30 Jul - 4 Aug 2007

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  • Report No.: FERMILAB-CONF-07-524-T
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 917433
  • Archival Resource Key: ark:/67531/metadc889676

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  • October 1, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 7, 2016, 10:55 p.m.

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Aubin, C.; Coll., /Columbia U. /William-Mary; Laiho, Jack; /Fermilab /Washington U., St. Louis; Van de Water, Ruth S. & /Fermilab. Taste violations in the scalar correlator in mixed action simulations, article, October 1, 2007; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc889676/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.