Scaling test of two-flavor O(a)-improved lattice QCD
Michele Della Morte, Patrick Fritzsch, Harvey B. Meyer, Hubert Simma,, Rainer Sommer, Shinji Takeda, Oliver Witzel, Ulli Wolff
TL;DR
This paper presents a scaling test of mesonic observables in two-flavor O(a)-improved lattice QCD, showing no significant scaling violations and updating the Lambda parameter estimate.
Contribution
It provides the first detailed scaling analysis of mesonic observables in non-perturbatively O(a)-improved Wilson lattice QCD with two flavors.
Findings
No significant scaling violations observed.
Updated estimate of the Lambda parameter: 0.52(6).
Validated the effectiveness of O(a) improvement in this setup.
Abstract
We report on a scaling test of several mesonic observables in the non-perturbatively O(a) improved Wilson theory with two flavors of dynamical quarks. The observables are constructed in a fixed volume of 2.4fm x (1.8fm)^3 with Schroedinger functional boundary conditions. No significant scaling violations are found. Using the kaon mass determined in \cite{cernI}, we update our estimate of the Lambda parameter to Lambda^(2)_{msbar}/m_K = 0.52(6).
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