Instanton effects in hadron spectroscopy in SU(2) (lattice) gauge theory

Oct, 1997
13 pages
Published in:
  • Phys.Lett.B 420 (1998) 97-103
e-Print:
Report number:
  • COLO-HEP-391

Citations per year

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Abstract:
We describe quenched spectroscopy in SU(2) gauge theory using smoothed gauge field configurations. We investigate the properties of quarks moving in instanton background field configurations, where the sizes and locations of the instantons are taken from simulations of the full gauge theory. By themselves, these multi-instanton configurations do not confine quarks, but they induce chiral symmetry breaking.
Note:
  • 13 pages, LaTeX, 8 eps figures Report-no: COLO-HEP-391
  • fermion: lattice field theory
  • gauge field theory: SU(2)
  • hadron spectroscopy
  • approximation: quenching
  • background field: instanton
  • symmetry breaking: chiral
  • rho(770): mass
  • pi: mass
  • quark: mass
  • propagator: pseudoscalar