Browsing by Author "Follana, E."

Now showing items 1-5 of 5

    • Article  

      Critical mass of Wilson fermions: A comparison of perturbative and Monte Carlo results 

      Follana, E.; Panagopoulos, Haralambos G. (2001)
      We calculate the critical value of the hopping parameter, κc , in lattice QCD with Wilson fermions, to two loops in perturbation theory. This quantity is an additive renormalization
    • Article  

      Gluon propagator without lattice Gribov copies 

      Alexandrou, Constantia; De Forcrand, Ph; Follana, E. (2001)
      We study the gluon propagator in quenched lattice QCD using the Laplacian gauge which is free of lattice Gribov copies. We compare our results with those obtained in the Landau gauge on the lattice, as well as with various ...
    • Article  

      Gluon propagator without lattice Gribov copies on a finer lattice 

      Alexandrou, Constantia; De Forcrand, Ph; Follana, E. (2002)
      We extend our study of the gluon propagator in quenched lattice QCD using the Laplacian gauge to a finer lattice. We verify the existence of a pole mass as we take the continuum limit and deduce a value of ∼600-30 +150 MeV ...
    • Article  

      Laplacian gauge gluon propagator in SU(Nc) 

      Alexandrou, Constantia; De Forcrand, P.; Follana, E. (2002)
      We examine the gluon propagator in the Laplacian gauge in quenched lattice QCD as a function of the number of colors. We observe a weak dependence on Nc over the whole momentum range. This implies an almost Nc-independent ...
    • Article  

      One-loop renormalization of fermionic currents with the overlap-Dirac operator 

      Alexandrou, Constantia; Follana, E.; Panagopoulos, Haralambos G.; Vicari, E. (2000)
      We compute the one-loop lattice renormalization of the two-quark operators ψ̄Γψ, where Γ denotes the generic Dirac matrix, for the lattice formulation of QCD using the overlap-Dirac operator. We also study the renormalization ...