My paper with Fabiano Feleppa and Gaetano Lambiase, where we study non-local Bell-type quantum correlations between pairs of entangled particles within screened dark energy models (see this earlier news item), has been accepted for publication without changes in PRD! You can read the preprint version of our paper on arXiv: 2508.18448.
Screened dark energy and non-local quantum correlations
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.
Visit by Michael Zantedeschi
This week we have Michael Zantedeschi, currently a postdoc at the Tsung-Dao Lee Institute, Shanghai Jiao Tong University (in the group of Luca Visinelli), visiting us for a couple of days. Michael is actually not new to Trento, having been an undergrad here (although he arrived just after I finished my undergrad, so we never overlapped). While we aren’t directly working together (yet), we will be brainstorming ideas related to screened dark energy, as well as the mysterious cosmological constant. Welcome Michael!