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    • 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 ...

    • Higher-derivative harmonic oscillators: stability of classical dynamics and adiabatic invariantsPeer reviewedOpen access 

      06 janvier 2019, Boulanger, Nicolas; BUISSERET, Fabien; DIERICK, Frédéric; White, Olivier, CERISIC
      Article scientifique
      he status of classical stability in higher-deriv- ative systems is still subject to discussions. In this note, we argue that, contrary to general belief, many higher-derivative systems are classically stable. The main tool to see this prop- erty are Nekhoroshev’s estimates relying on the action-angle formulation of classical mechanics. The latter formulation can be reached provided the Hamiltonian ...

    • Anyons in quantum mechanics with a minimal lengthPeer reviewedOpen access 

      15 février 2017, BUISSERET, Fabien, HE Louvain en Hainaut
      Article scientifique
      The existence of anyons, i.e. quantum states with an arbitrary spin, is a generic feature of standard quantum mechanics in (2+1)-dimensional Minkowski spacetime. Here it is shown that relativistic anyons may exist also in quantum theories where a minimal length is present. The interplay between minimal length and arbitrary spin effects are discussed.

    • DYSKIMOT: An Ultra-Low-Cost Inertial Sensor to Assess Head’s Rotational Kinematics in Adults during the Didren-Laser TestPeer reviewedOpen access 

      04 février 2020, Hage, Renaud; Detrembleur, Christine; DIERICK, Frédéric; Pitance, Laurent; JOJCZYK, Laurent; ESTIEVENART, Wesley; BUISSERET, Fabien, CERISIC
      Article scientifique
      Various noninvasive measurement devices can be used to assess cervical motion. The size, complexity, and cost of gold-standard systems make them not suited to clinical practice, and actually difficult to use outside a dedicated laboratory. Nowadays, ultra-low-cost inertial measurement units are available, but without any packaging or a user-friendly interface. The so-called DYSKIMOT is a home-designed, ...