Simulating at Realistic Quark Masses: Pseudoscalar Decay Constants and Chiral Logarithms

M. Göckeler; R. Horsley; Y. Nakamura; D. Pleiter; P. E. L. Rakow; G. Schierholz; W. Schroers; T. Streuer; H. Stüben; J. M. Zanotti

arXiv · hep-lat/0610066

Simulating at Realistic Quark Masses: Pseudoscalar Decay Constants and Chiral Logarithms

M. Göckeler·R. Horsley·Y. Nakamura·D. Pleiter·P. E. L. Rakow·G. Schierholz·W. Schroers·T. Streuer·H. Stüben·J. M. Zanotti

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Abstract

Due to improvements in computer performance and algorithms, the rapidly increasing cost for unquenched Wilson-type fermions with lighter quarks has been ameliorated and new simulations are now possible. Here we present results using two flavours of O(a)-improved Wilson fermions for meson decay constants at pseudoscalar masses down to 320MeV. Results are at several lattice spacings down to about 0.07fm and include a non-perturbative determination of the renormalisation constant. This enables us to attempt contact with (partially quenched) chiral perturbation theory.

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M. Göckeler, R. Horsley, Y. Nakamura, D. Pleiter, P. E. L. Rakow, G. Schierholz, W. Schroers, T. Streuer, H. Stüben, J. M. Zanotti. 2006-10-10. Simulating at Realistic Quark Masses: Pseudoscalar Decay Constants and Chiral Logarithms. https://arxiv.org/abs/hep-lat/0610066

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