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Unquenching the topological susceptibility with an overlap action

Authors
Publisher
Elsevier B.V.
Publication Date
Identifiers
DOI: 10.1016/s0920-5632(01)01783-2
Keywords
  • Parallel Sessions
Disciplines
  • Mathematics
  • Physics

Abstract

Abstract 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.

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