3 papers
hep-lat2019
-state contamination in lattice calculations of the nucleon pseudoscalar form factor
Oliver Bar
The nucleon-pion-state contribution in the QCD 3-point function of the pseudoscalar density is calculated to leading order in chiral perturbation theory. It predicts a nucleon-pion…
hep-lat2003
Chiral perturbation theory for lattice QCD including O(a^2)
O. Baer, G. Rupak, N. Shoresh
The O(a^2) contributions to the chiral effective Lagrangian for lattice QCD with Wilson fermions are constructed. The results are generalized to partially quenched QCD with Wilson…
hep-lat2002
On Witten's global anomaly for higher SU(2) representations
O. Baer
The spectral flow of the overlap operator is computed numerically along a path connecting two gauge fields which differ by a topologically non-trivial gauge transformation. The cal…