• (2+1)-d glueball spectrum within a constituent picturePeer reviewedOpen access 

      27 juillet 2013, BUISSERET, Fabien; Mathieu, Vincent; Semay, Claude, HE Louvain en Hainaut
      Article scientifique
      The quantum numbers and mass hierarchy of the glueballs observed in (2+1)-dimensional lattice QCD with gauge group SU(Nc) are shown to be in agreement with a constituent picture. The agreement is maintained when going from glueballs to gluelumps, and when the gauge group SO(2Nc) is taken instead of SU(Nc).
    • Many-Quark Interactions: Large-N Scaling and Contribution to Baryon MassesPeer reviewedOpen access 

      31 mai 2022, BUISSERET, Fabien; Willemyns, Cintia; Semay, Claude, CeREF Technique
      Article scientifique
      Starting from an effective Hamiltonian modeling, of a baryon made of N identical quarks in the large-N approach of QCD, we obtain analytical formulas, allowing to estimate the contributions of multiquark interactions to the baryon mass. The cases of vanishing (mass spectrum) and nonvanishing (baryon melting) temperatures are treated.
    • Meson spectrum in SU(N) gauge theories with quarks in higher representations: A check of Casimir scaling hypothesisPeer reviewedOpen access 

      01 juin 2020, BUISSERET, Fabien; Semay, Claude, CeREF Technique
      Article scientifique
      Gauge theories with gauge group and quarks belonging to arbitrary representations of SU(N) form a rich landscape of QCD-like theories, whose study can shed new light on the properties of confinement. Four cases are particularly worth of interest: quarks in the fundamental representation, quarks in the 2-indice (anti)symmetric representation and quarks in the adjoint representation. The last three ...