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Non-perturbative improvement of quark mass renormalization in two-flavour lattice QCD

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arxiv 1004.3978 v2 pith:TRP5H26Q submitted 2010-04-22 hep-lat

Patrick Fritzsch , Jochen Heitger , Nazario Tantalo This is my paper · ORCID
classification hep-lat
keywords latticeregionrenormalizationtwo-flavourconstantimprovementmassnon-perturbatively
verification ladder T0 review T1 audit T2 compute T3 formal
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We non-perturbatively determine the renormalization constant and the improvement coefficients relating the renormalized current and subtracted quark mass in O(a) improved two-flavour lattice QCD. We employ the Schr\"odinger functional scheme and fix the physical extent of the box by working at a constant value of the renormalized coupling. Our calculation yields results which cover two regions of bare parameter space. One is the weak-coupling region suitable for volumes of about half a fermi. By making simulations in this region, quarks as heavy as the bottom can be propagated with the full relativistic QCD action and renormalization problems in HQET can be solved non-perturbatively by a matching to QCD in finite volume. The other region refers to the common parameter range in large-volume simulations of two-flavour lattice QCD, where our results have particular relevance for charm physics applications.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Precision renormalisation and improvement of $N_{\rm f}=3$ lattice QCD with Wilson fermions

    hep-lat 2026-06 unverdicted novelty 6.0 of 10

    New non-perturbative renormalization and improvement results for currents and masses in Nf=3 O(a)-improved Wilson QCD at small a using Schrödinger functional boundary conditions and gradient flow tuning.

  2. Pion condensation at non-zero isospin chemical potential with Wilson fermions

    hep-lat 2025-02 conditional novelty 5.0 of 10

    Using Wilson fermions on the lattice, the onset of pion condensation is observed at an isospin chemical potential slightly below m_pi/2, consistent with earlier staggered-fermion results.

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