Browsing by Author "Christou, Chris"

Now showing items 1-9 of 9

    • Article  

      The 3-loop beta function of QCD 

      Allés, B.; Christou, Chris; Feo, A.; Panagopoulos, Haralambos G.; Vicari, E. (1997)
      Using the background field technique, we calculate the 3-loop beta function of lattice SU (N) gauge theories. In the pure gluonic case, we present our results, comparing to those recently obtained by Luescher and Weisz. ...
    • Conference Object  

      Effect of head posture changes in the geometry and hemodynamics of a healthy human carotid bifurcation 

      Papaharilaou, Yannis; Seimenis, Ioannis; Pattakos, N.; Ekaterinaris, J.; Georgiou, Georgios C.; Eracleous, Eleni A.; Christou, Chris; Brott, B. C.; Anayiotos, Andreas S. (2007)
    • Article  

      Fractal behaviour in the O(3) model 

      Christou, Chris; Diakonos, Fotis K.; Panagopoulos, Haralambos G. (1995)
      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. © 1995.
    • Article  

      Improved lattice operators: Case of the topological charge density 

      Christou, Chris; Di Giacomo, A.; Panagopoulos, Haralambos G.; Vicari, E. (1996)
      We analyze the properties of a class of improved lattice topological charge density operators, constructed by a smearinglike procedure. By optimizing the choice of the parameters introduced in their definition we find ...
    • Article  

      Improving the topological charge density operator on the lattice 

      Christou, Chris; Di Giacomo, A.; Panagopoulos, Haralambos G.; Vicari, E. (1996)
      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 introduced in their definition, we find ...
    • Article  

      Three-loop results in QCD with Wilson fermions 

      Allés, B.; Christou, Chris; Feo, A.; Panagopoulos, Haralambos G.; Vicari, E. (1998)
      We calculate the third coefficient of the lattice beta function in QCD with Wilson fermions, extending the pure gauge results of Lüscher and Weisz
    • Article  

      The three-loop β-function of SU(N) lattice gauge theories with Wilson fermions 

      Christou, Chris; Feo, A.; Panagopoulos, Haralambos G.; Vicari, E. (1998)
      We calculate the third coefficient of the lattice β-function associated with the Wilson formulation for both gauge fields and fermions. This allows us to evaluate the three-loop correction (linear in g2 0) to the relation ...
    • Article  

      Two-layer model for photomodulated thermoreflectance of semiconductor wafers 

      Christofides, Constantinos; Diakonos, Fotis K.; Seas, Antonios; Christou, Chris; Nestoros, Marios; Mandelis, Andreas (1996)
      A complete theoretical analysis of the laser photomodulated thermoreflectance signal from a two-layer semiconducting wafer is presented. It is shown that the electronic and thermal properties of a thin surface layer may ...
    • Article  

      The two-loop relation between the bare lattice coupling and the MS coupling in QCD with Wilson fermions 

      Christou, Chris; Feo, A.; Panagopoulos, Haralambos G.; Vicari, E. (1998)
      We calculate the two-loop relation between the coupling renormalized in the MS̄ scheme and the bare lattice coupling g0 in QCD with Wilson fermions, extending the pure gauge results of Lüscher and Weisz. Our calculation ...