Topological Summation of Observables Measured with Dynamical Overlap Fermions

Details Topological Summation of Observables Measured with Dynamical Overlap Fermions Topological Summation of Observables Measured with Dynamical Overlap Fermions

2008-08-22

arxiv.org/abs/0808.3049v2

PoS LATTICE2008:079,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 5 figures, one statement corrected

Scientific paper

HMC histories for light dynamical overlap fermions tend to stay in a fixed topological sector for many trajectories, so that the different sectors are not sampled properly. Therefore the suitable summation of observables, which have been measured in separate sectors, is a major challenge. We explore several techniques for this issue, based on data for the chiral condensate and the (analogue of the) pion mass in the 2-flavour Schwinger model with dynamical overlap-hypercube fermions.

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