229 citations · 6.9k across the 257 of their papers we have counts for
6 papers · 1 filter
The Vacuum Polarization: Power Corrections beyond OPE ?
M. Gockeler, R. Horsley, W. Kurzinger +4
We compute the vacuum polarization on the lattice using non-perturbatively O(a) improved Wilson fermions. The result is compared with the operator product expansion (OPE).
A lattice calculation of the nucleon's spin-dependent structure function g_2 revisited
M. Gockeler, R. Horsley, W. Kurzinger +5
Our previous calculation of the spin-dependent structure function g_2 is revisited. The interest in this structure function is to a great extent motivated by the fact that it recei…
Dirac eigenvalues and eigenvectors at finite temperature
M. Göckeler, H. Hehl, P. E. L. Rakow +3
We investigate the eigenvalues and eigenvectors of the staggered Dirac operator in the vicinity of the chiral phase transition of quenched SU(3) lattice gauge theory. We consider b…
Four-quark operators in hadrons
S. Capitani, M. Gockeler, R. Horsley +8
We present calculations of matrix elements of 4-quark operators in the pion and in the nucleon extracted from quenched Monte Carlo simulations at beta = 6.0 using Wilson fermions.…
Renormalisation and off-shell improvement in lattice perturbation theory
S. Capitani, M. Goeckeler, R. Horsley +4
We discuss the improvement of flavour non-singlet point and one-link lattice quark operators, which describe the quark currents and the first moment of the DIS structure functions…
Quenched QCD near the chiral limit
M. Gockeler, R. Horsley, D. Petters +3
A numerical study of quenched QCD for light quarks is presented using O(a) improved fermions. Particular attention is paid to the possible existence and determination of quenched c…