232 citations · 3.1k across the 134 of their papers we have counts for
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O(a^2) corrections to the propagator and bilinears of Wilson / clover fermions
Martha Constantinou, Haralambos Panagopoulos, Fotos Stylianou
We present the corrections to the fermion propagator, to second order in the lattice spacing, O(a^2), in 1-loop perturbation theory. The fermions are described by the clover action…
Two-loop renormalization of vector, axial-vector and tensor fermion bilinears on the lattice
A. Skouroupathis, H. Panagopoulos
We compute the two-loop renormalization functions, in the RI' scheme, of local bilinear quark operators , where corresponds to the Vector, Axial-Vector and Tensor Dira…
Theta dependence of SU(N) gauge theories in the presence of a topological term
Ettore Vicari, Haralambos Panagopoulos
We review results concerning the theta dependence of 4D SU(N) gauge theories and QCD, where theta is the coefficient of the CP-violating topological term in the Lagrangian. In part…
Higher representations on the lattice: perturbative studies
Luigi Del Debbio, Mads T. Frandsen, Haralambos Panagopoulos +1
We present analytical results to guide numerical simulations with Wilson fermions in higher representations of the colour group. The ratio of parameters, the additive renormali…
Two-loop additive mass renormalization with clover fermions and Symanzik improved gluons
A. Skouroupathis, M. Constantinou, H. Panagopoulos
We calculate the critical value of the hopping parameter, , in Lattice QCD, up to two loops in perturbation theory. We employ the Sheikholeslami-Wohlert (clover) improved acti…