https://luck.synhera.be/handle/123456789/103 2026-09-14T14:58:51Z 2026-09-14T14:58:51Z Buisseret, Fabien Semay, Claude Mathieu, Vincent Chevalier, Cyrille https://luck.synhera.be/handle/123456789/3138 2026-08-27T09:37:24Z 2026-01-10T00:00:00Z

Casimir scaling in glueballs in SU(��) and Sp(2��) gauge theories: Hints from constituent approaches Buisseret, Fabien; Semay, Claude; Mathieu, Vincent; Chevalier, Cyrille Xe have shown that the ratio of the glueball masses on their large N mass in SU(N) and Sp(2N) gauge theories dominantly scales according to the Casimir scaling hypothesis. This result is in agreement with previous findings in the mesonic sector. Such scaling laws may help to put constraints on effective models parameters, as we have shown in the case of constituent gluons approaches, where the observed scaling law favours adjoint strings as the best candidate to model interactions between constituent gluons. A simple two-body spinless Salpeter Hamiltonian with funnel potential is able to model the SU(∞) and Sp(∞) ��=+ low-lying spectrum provided constituent gluons are seen as transverse particles. A three-body Y-junction generalization of this Hamiltonian leads to a ��=− low-lying spectrum with the expected global features but show-ing extra states with respect to the lattice QCD spectrum.

2026-01-10T00:00:00Z Du Brulle, Christian Boulanger, Nicolas Buisseret, Fabien Dierick, Frédéric White, Olivier https://luck.synhera.be/handle/123456789/3137 2026-08-27T09:35:48Z 2026-05-08T00:00:00Z

t si le cerveau utilisait la physique fondamentale pour piloter nos gestes ? Du Brulle, Christian; Boulanger, Nicolas; Buisseret, Fabien; Dierick, Frédéric; White, Olivier Saisir une tasse, écrire son prénom, tendre la main. Des gestes simples, presque automatiques. Derrière cette apparente évidence se cache une question : comment le cerveau choisit-il un mouvement précis parmi une infinité de possibilités pour réaliser ces tâches ?

2026-05-08T00:00:00Z White, Olivier BUISSERET, Fabien DIERICK, Frédéric Boulanger, Nicolas https://luck.synhera.be/handle/123456789/3086 2025-11-26T09:34:21Z 2025-11-25T00:00:00Z

From brain to motion: harnessing higher-derivative mechanics for neural control White, Olivier; BUISSERET, Fabien; DIERICK, Frédéric; Boulanger, Nicolas Optimal Feedback Control provides a theoretical framework for goal-directed movements, where the nervous system adjusts actions based on sensory feedback. This theory assumes that there exists a cost function that is optimized throughout one's movement. It is natural to assume that mechanical quantities should be involved in cost functions, but this does not imply that the mechanical principles that govern human voluntary movements are necessarily Newtonian. We argue that integrating principles from Lagrangian and Hamiltonian higher-derivative mechanics, i.e. dynamical models relying on a Lagrangian of the form $L\left(\vec x,\dot{\vec x},\ddot{\vec x},\dots,\vec x^{\, (N)}\right)$, with $N\geq 2$ and where $\vec x^{\, (i)}$ denotes the $i^{\rm th}$ time-derivative of the position $\vec x$, provides a more natural framework to study the constraints hidden in human voluntary movement within Optimal Feedback Control theory.

2025-11-25T00:00:00Z DIERICK, Frédéric BUISSERET, Fabien Hoho, Thomas Fievet, Alexandre Luta, Adele https://luck.synhera.be/handle/123456789/3085 2025-11-26T09:33:48Z 2025-09-30T00:00:00Z

Solving Raven’s Matrices While Walking on a Treadmill: Insights into Cognitive-Motor Interference Patterns in Dual-Task DIERICK, Frédéric; BUISSERET, Fabien; Hoho, Thomas; Fievet, Alexandre; Luta, Adele This study investigates cognitive-motor interference by combining Raven’s Progressive Matrices Test (RPMT) with treadmill walking. Two groups of healthy adults—20 young adults (born after 1995) familiar with treadmill walking and 18 older adults (born before 1980) without treadmill experience—completed both single-task and dual-task conditions. Cognitive performance (RPMT score) and gait metrics (stride interval variability and sample entropy) were recorded. Results revealed diverse interference patterns, with a predominance of gait-prioritization strategies under dual-task conditions. Significant differences between groups were found: younger adults showed greater cognitive performance decline, while older adults increased stride interval under dual-task conditions. A negative correlation between gait variability and complexity suggested adaptive motor strategies in some participants. This dual-task paradigm offers a standardized framework to explore both individual and group variability in multitasking performance. These insights may inform the design of safer environments and interventions targeting populations with different cognitive-motor profiles.

2025-09-30T00:00:00Z