Speaker
Description
The most active area of research in quantum-gravity phenomenology investigates the possibility of Planck-scale-modified dispersion relations, focusing mainly on two alternative scenarios: the “LIV" scenario, characterized by a specific mechanism of breakdown of relativistic symmetries, and the “DSR" scenario, which preserves overall relativistic invariance but with deformed laws of relativistic transformation.
The last one relies on the Hopf algebraic structure provided by the k-Poincaré deformed algebra. We have therefore a method to extract observable physical predictions from a pure algebraic framework, sharing several features with other avenues rooted in quantum information research lines.
Remarkably, the DSR scenario allows for modifications of time dilation, and establishing their magnitude required us to obtain novel results on the effects of finite DSR boosts in the spacetime sector, with results showing in particular that the modification of time dilation is too small for experimental testing.