Unquenching Effects on the Coefficients of the Luscher-Weisz Action

The effects of unquenching on the perturbative improvement coefficients in the Symanzik action are computed within the framework of Luscher-Weisz on-shell improvement. We find that the effects of quark loops are surprisingly large, and their omissionmay well explain the scaling violations observed in some unquenched studies.

Unquenching effects on the coefficients of the Luscher-Weisz action

The effects of unquenching on the perturbative improvement coefficients in the Symanzik action are computed within the framework of Luscher-Weisz on-shell improvement. We find that the effects of quark loops are surprisingly large, and their omissionmay well explain the scaling violations observed in some unquenched studies.