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Parcourir CEREF par auteur "Semay, Claude"
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(2+1)-d glueball spectrum within a constituent picture
Article scientifiqueThe 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 Masses
Article scientifiqueStarting 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 hypothesis
Article scientifiqueGauge 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 ...