@Article{Bernardoni_etal2011,
author="Bernardoni, F.
and Garron, N.
and Hernandez, P.
and Necco, S.
and Pena, C.",
title="Probing the chiral regime of N-f=2 QCD with mixed actions",
journal="Physical Review D",
year="2011",
publisher="Amer Physical Soc",
volume="83",
number="5",
pages="054503--17pp",
abstract="We report on our first experiences with a mixed action setup with overlap valence quarks and nonperturbatively O(a) improved Wilson sea quarks. For the latter we employ CLS N-f = 2 configurations with light sea-quark masses at small lattice spacings. Exact chiral symmetry allows to consider very light valence quarks and explore the matching to (partially-quenched) Chiral Perturbation Theory (ChPT) in a mixed epsilon/p-regime. We compute the topological susceptibility and the low-lying spectrum of the massless Neuberger-Dirac operator for three values of the sea-quark mass, and compare the sea-quark mass dependence to NLO ChPT in the mixed regime. This provides two different determinations of the chiral condensate, as well as information about some NLOlow-energy couplings. Our results allow to test the consistency of the mixed-regime approach to ChPT, as well as of the mixed action framework.",
optnote="ISI:000288389300005",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=546), last updated on Mon, 11 Apr 2011 17:15:04 +0000",
issn="1550-7998",
doi="10.1103/PhysRevD.83.054503",
opturl="http://arxiv.org/abs/arXiv:1008.1870",
opturl="https://doi.org/10.1103/PhysRevD.83.054503",
archivePrefix="arXiv",
eprint="arXiv:1008.1870",
language="English"
}