49 citations · 100 across the 7 of their papers we have counts for
5 papers · 1 filter
The three-loop beta function of SU(N) lattice gauge theories with Wilson fermions
C. Christou, A. Feo, H. Panagopoulos +1
We calculate the third coefficient of the lattice beta function associated with the Wilson formulation for both gauge fields and fermions. This allows us to evaluate the three-loop…
Three-Loop Results in QCD with Wilson Fermions
B. Alles, C. Christou, A. Feo +2
We calculate the third coefficient of the lattice beta function in QCD with Wilson fermions, extending the pure gauge results of Luescher and Weisz; we show how this coefficient mo…
The 3-loop Beta Function of QCD
B. Alles, C. Christou, A. Feo +2
Using the background field technique, we calculate the 3-loop beta function of lattice gauge theories. In the pure gluonic case, we present our results, comparing to those…
Improving the topological charge density operator on the lattice
C. Christou, A. Di Giacomo, H. Panagopoulos +1
We analyze the properties of a class of improved lattice topological charge density operators, constructed by a smearing-like procedure. By optimizing the choice of the parameters…
Fractal Behaviour in the O(3) Model
C. Christou, F. K. Diakonos, H. Panagopoulos
We study domain formation in the two-dimensional O(3) model near criticality. The fractal dimension of these domains is determined with good statistical accuracy.