Unquenching the topological susceptibility with an overlap action

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We estimate the quark-mass dependence of the topological susceptibility with dynamical overlap and clover fermions. Unquenching effects on the susceptibility turn out to be well approximated by a reweighting of a quenched ensemble with a low-eigenmode truncation of the fermionic determinant. We find that it is most likely due to the explicit chiral symmetry breaking of the fermion action that present day dynamical simulations do not show the expected suppression of the topological susceptibility.

Original languageEnglish
Pages (from-to)578-580
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
Publication statusPublished - Mar 1 2002


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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