Effect of improving the lattice gauge action on QCD topology

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We use lattice topology as a laboratory to-compare the Wilson action (WA) with the Symanzik-Weisz (SW) action constructed from a combination of (1 x 1) and (1 x 2) Wilson loops, and the estimate of the renormalization trajectory (RT)[1] from a renormalization group transformation (RGT) which also includes higher representations of the (1 x 1) loop. Topological charges are computed using the geometric (Luscher`s) and plaquette methods on the uncooled lattice, and also by using cooling to remove ultraviolet artifacts. We show that as the action improves by approaching the RT, the topological charges for individual configurations, computed using these ... continued below

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7 p.

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Grandy, J. & Kilcup, G. August 19, 1996.

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  • Grandy, J. Lawrence Livermore National Lab., CA (United States)
  • Kilcup, G. Ohio State Univ., Columbus, OH (United States). Dept. of Physics

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Description

We use lattice topology as a laboratory to-compare the Wilson action (WA) with the Symanzik-Weisz (SW) action constructed from a combination of (1 x 1) and (1 x 2) Wilson loops, and the estimate of the renormalization trajectory (RT)[1] from a renormalization group transformation (RGT) which also includes higher representations of the (1 x 1) loop. Topological charges are computed using the geometric (Luscher`s) and plaquette methods on the uncooled lattice, and also by using cooling to remove ultraviolet artifacts. We show that as the action improves by approaching the RT, the topological charges for individual configurations, computed using these three methods become more highly correlated, suggesting that artificial lattice renormalizations to the topological susceptibility can be suppressed by improving the action.

Physical Description

7 p.

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OSTI as DE97050766

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  • 14. international symposium on lattice field theory, St. Louis, MO (United States), 4-8 Jun 1996

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  • Other: DE97050766
  • Report No.: UCRL-JC--125116
  • Report No.: CONF-9606278--5
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 438999
  • Archival Resource Key: ark:/67531/metadc687406

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  • August 19, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 16, 2016, 6:35 p.m.

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Grandy, J. & Kilcup, G. Effect of improving the lattice gauge action on QCD topology, article, August 19, 1996; California. (digital.library.unt.edu/ark:/67531/metadc687406/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.