We discuss boson stars and black holes with scalar hair in a model where the complex scalar field forming the boson star and the hair on the black hole, respectively, interacts with a real scalar field via a H´enon-Heiles-type potential. We demonstrate that black holes and boson stars carrying only a real scalar field with cubic self-interaction are possible and that black holes with both real ...

Cervical spine mobility assessment is crucial in rehabilitation to monitor patient progress. This study introduces the DidRen VR test, a virtual reality (VR) adaptation of the conventional DidRen laser test, aimed at evaluating cervical spine mobility. We conducted a cross-sectional study involving fifty healthy participants that underwent the DidRen VR test. The satisfaction of Fitts’ law within ...

We construct Q-ball solutions from a model consisting of one massive scalar field ξ and one massive complex scalar field ϕ interacting via the cubic couplings g1ξϕ ϕ þ g2ξ3, typical of Henon-Heiles-like potentials. Although being formally simple, these couplings allow for Q-balls. In one spatial dimension, analytical solutions exist, either with vanishing or nonvanishing ϕ. In three spatial ...

Conférence donnée au Séminaires Sandwich de l'UMONS, le 20/02/24 Consultable en ligne : https://www.youtube.com/watch?v=jrdfvWcXOrg

This study aims to investigate the relationships between altered kinematic parameters, as assessed by the DidRen laser test, and PROMs. Using a multivariate logistic regression (LR) model, we sought to identify the best predictors for discriminating ANSP patients from HCP. We hypothesized that the DidRen laser test would reveal different relationships between kinematic parameters and PROMs ...