Very happy to see my latest preprint with Fabiano Feleppa and Gaetano Lambiase from the University of Salerno finally out on the arXiv - kudos to Fabiano who did all the heavy-lifting and an excellent job! We focused on so-called screened dark energy/modified gravity models, where the would-be fifth force associated to a new light scalar degree of freedom responsible for cosmic acceleration is dynamically suppressed through, you guessed it, screening mechanisms, such as the chameleon, symmetron, and dilaton ones. We showed that these mechanisms can leave their imprint in non-local Bell-type correlations between pairs of entangled particles, leading to potential new observational signatures in currently unconstrained regions of parameter space. These will not be easy to detect, but if anything that’s a challenge for future generations of experimentalists! You can read our results in the preprint we just posted on arXiv: 2508.18448.
Zakaria Belkhadria wins STSM grant to visit Trento
Congratulations to Zakaria Belkhadria, who recently received his PhD from the University of Cagliari and the University of Geneva, and who was awarded a COST short-term scientific mission (STSM) grant within the CosmoVerse COST Action, which will fund his short visit to the University of Trento in October! Zakaria will be working with Max Rinaldi and myself on strong-field tests of modified gravity models which show promise in the Hubble tension context.