Some remarks on O(a) improved twisted mass QCD

Details Some remarks on O(a) improved twisted mass QCD Some remarks on O(a) improved twisted mass QCD

2001-10-16

arxiv.org/abs/hep-lat/0110140v1

Nucl.Phys.Proc.Suppl. 106 (2002) 814-816

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2001(improvement), 3 pages

Scientific paper

Twisted mass QCD (tmQCD) has been introduced as a solution to the problem of unphysical fermion zero modes in lattice QCD with quarks of the Wilson type. We here argue that O(a) improvement of the tmQCD action and simple quark bilinear operators can be more economical than in the standard framework. In particular, an improved and renormalized estimator of the pion decay constant in two-flavour QCD is available, given only the Sheikholeslami-Wohlert coefficient c_sw and an estimate of the critical mass m_c.

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