Astrophysical searches for quantum-gravity-induced time delays

15th-19th January 2024


The exploration of the Universe has recently entered a new era thanks to the increasing quality of astrophysical data and the advent of the multi-messenger paradigm. The detection of high-energy cosmic particles allows us to test physical theories at energy regimes which are not directly accessible in accelerators. In addition, their long travel time to the detectors acts as an amplifier of tiny anomalies which might affect their propagation. This finally enables us to test effects of the Planck scale, thus providing a bottom-up approach to the largely studied quantum gravity problem. In this context, one of the most studied conjectured quantum gravity effects is an “in-vacuo dispersion”, resulting in a shift in the time of arrival of particles with different energies emitted simultaneously from the same source.

The main objective of the workshop is to gather scientists who are approaching searches for “in-vacuo dispersion” from both the theoretical and experimental sides, to discuss recent advancements on the prediction and possibility of detection of this phenomenon.



  • Giulia Gubitosi
  • Christian Pfeifer
  • Tomislav Terzic
  • Rafael Alves-Batista
  • Giovanni Amelino-Camelia
  • Julien Bolmont
  • Anna Campoy Ordaz
  • Jose Manuel Carmona
  • Sami Caroff
  • Giacomo D’Amico
  • Daniel Kerszberg
  • Jerzy Kowlaski-Glikman
  • Iarley Pereira Lobo
  • Jelena Striskovic
  • Giacomo Rosati
  • Denitsa Staicova
  • Markus Gaug
  • Francesco Longo