出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We simulate Quantum Chromodynamics in four Euclidean dimensions with two (degenerate
mass) avors of dynamical quarks. The Dirac operator is the so-called chirally improved operator
that has been studied so far in quenched calculations. We now present results of an implementation
with the Hybrid Monte Carlo (HMC) algorithm including stout smearing. Our results are
from an 83 16 lattice with tadpole improved Lüscher-Weisz gauge action. We present our estimate
of the lattice spacing, the pi and rho meson masses and evidence for tunneling between
different topological sectors.
