We simulate two dynamical, mass-degenerate light quarks on ${16}^3\times 32$ lattices with a spatial extent of 2.4 fm using the chirally improved Dirac operator. The simulation method, the implementation of the action, and signals of equilibration are discussed in detail. Based on the eigenvalues of the Dirac operator we discuss some qualitative features of our approach. Results for ground-state masses of pseudoscalar and vector mesons as well as for the nucleon and delta baryons are presented.

• Received 12 December 2008

DOI:https://doi.org/10.1103/PhysRevD.79.054501