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  • 标题:Hadron spectrum of QCD with one quark flavor
  • 本地全文:下载
  • 作者:F. Farchioni
  • 期刊名称:PoS - Proceedings of Science
  • 印刷版ISSN:1824-8039
  • 出版年度:2008
  • 卷号:2008
  • 出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
  • 摘要:The latest results of an ongoing project for the lattice simulation of QCD with a single quark flavor are presented. The Symanzik tree-level-improvedWilson action is adopted in the gauge sector and the (unimproved) Wilson action for the fermion. Results from new simulations with one step of Stout-smearing (r =0.15) in the fermion action are discussed. The one-flavor theory is simulated by a polynomial hybridMonte Carlo algorithm (PHMC) at b =4.0 corresponding to a =0.13fm, on 163 · 32 and 243 · 48 lattices; the box-size is L ≃ 2.1fm and L ≃ 3.1fm, respectively. At the lightest simulated quark mass the (partially quenched) pion mass is ∼ 300 MeV. The masses of the lightest bound states are computed, including the flavor singlet scalar and pseudoscalar mesons ss and hs, the scalar glueball 0++, and the D++ baryon. Relics of SUSY in the mass spectrum, expected from a large Nc orientifold equivalence with the N =1 supersymmetric Yang- Mills theory, are discussed.
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