Events

Date: 26 February 2026   Time: 14:00 - 15:00

Location: Room 610, G.O. Jones Building

Entanglement and Decoherence at colliders

Recent measurements at the Large Hadron Collider have observed entanglement in the spins of top pairs. This has motivated a substantial body of theoretical work on various quantum observables (e.g., entanglement, magic and decoherence) for the spin degrees of freedom of SM particles. In this talk, I will revisit the recent top-pair entanglement proposal, its measurement analysis, and how one can go beyond that. In particular, the effects of new physics through higher-dimensional EFT operators. I will also explore the effects of real radiation, which are expected to lead to quantum decoherence and a reduction of entanglement. We will identify the decoherence effects with soft and collinear emitted radiation and demonstrate how open quantum system operators can be related to splitting functions in QCD. If time permits, I will also discuss the experimental prospects of such effects.