The finite temperature QCD using 2+1 flavors of domain wall fermions at Nt = 8

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We study the region of the QCD phase transition using 2+1 flavors of domain wall fermions (DWF) and a 16{sup 3} x 8 lattice volume with a fifth dimension of L{sub s} = 32. The disconnected light quark chiral susceptibility, quark number susceptibility and the Polyakov loop suggest a chiral and deconfining crossover transition lying between 155 and 185 MeV for our choice of quark mass and lattice spacing. In this region the lattice scale deduced from the Sommer parameter r{sub 0} is a{sup -1} {approx} 1.3 GeV, the pion mass is {approx} 300 MeV and the kaon mass is ... continued below

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PDF-file: 43 pages; size: 0.9 Mbytes

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Cheng, M; Christ, N H; Li, M; Mawhinney, R D; Renfrew, D; Hegde, P et al. November 30, 2009.

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We study the region of the QCD phase transition using 2+1 flavors of domain wall fermions (DWF) and a 16{sup 3} x 8 lattice volume with a fifth dimension of L{sub s} = 32. The disconnected light quark chiral susceptibility, quark number susceptibility and the Polyakov loop suggest a chiral and deconfining crossover transition lying between 155 and 185 MeV for our choice of quark mass and lattice spacing. In this region the lattice scale deduced from the Sommer parameter r{sub 0} is a{sup -1} {approx} 1.3 GeV, the pion mass is {approx} 300 MeV and the kaon mass is approximately physical. The peak in the chiral susceptibility implies a pseudo critical temperature T{sub c} = 171(10)(17) MeV where the first error is associated with determining the peak location and the second with our unphysical light quark mass and non-zero lattice spacing. The effects of residual chiral symmetry breaking on the chiral condensate and disconnected chiral susceptibility are studied using several values of the valence L{sub s}.

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PDF-file: 43 pages; size: 0.9 Mbytes

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  • Journal Name: Physical Review D, vol. 81, no. 5, March 30, 2010, pp. 054510; Journal Volume: 81; Journal Issue: 5

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  • Report No.: LLNL-JRNL-420858
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 978903
  • Archival Resource Key: ark:/67531/metadc928462

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  • November 30, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 28, 2016, 4:25 p.m.

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Cheng, M; Christ, N H; Li, M; Mawhinney, R D; Renfrew, D; Hegde, P et al. The finite temperature QCD using 2+1 flavors of domain wall fermions at Nt = 8, article, November 30, 2009; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc928462/: accessed May 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.