Symanzik improvement with dynamical charm:  a 3+1 scheme for Wilson quarks

Fritzsch, Patrick; Sommer, Rainer; Stollenwerk, Felix; Wolff, Ulli

doi:10.1007/JHEP06(2018)025

Symanzik improvement with dynamical charm: a 3+1 scheme for Wilson quarks

ALPHA

Collaboration

•

Patrick Fritzsch
(
- CERN
)

May 4, 2018

20 pages

Published in:

JHEP 06 (2018) 025,
JHEP 10 (2020) 165 (erratum)

Published: Jun 5, 2018

e-Print:

1805.01661 [hep-lat]

DOI:

10.1007/JHEP06(2018)025,
10.1007/JHEP10(2020)165 (erratum)

Report number:

CERN-TH-2018-084,
DESY-18-058,
HU-EP-18-10

View in:

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Abstract: (Springer)

We discuss the problem of lattice artefacts in QCD simulations enhanced by the introduction of dynamical charmed quarks. In particular, we advocate the use of a massive renormalization scheme with a close to realistic charm mass. To maintain O(a) improvement for Wilson type fermions in this case we define a finite size scheme and carry out a nonperturbative estimation of the clover coefficient c

_{sw}

. It is summarized in a fit formula c

_{sw}

(g

_{0}^{2}

) that defines an improved action suitable for future dynamical charm simulations.

Note:

17 pages, 3 tables, 2 figures, published version (extended introduction)

Lattice Quantum Field Theory
Nonperturbative Effects
quantum chromodynamics
lattice field theory
lattice: effect
quark: flavor: 4
quark: Wilson
charm: mass
renormalization
nonperturbative

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Figures(2)

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