The LQP colloquium aims at communicating and promoting outstanding research in the context of local quantum physics, within the LQP community and beyond. The colloquium is held as a webinar and is intended to take place bi-annually.

The next event is takes place March 17, 2021, 3pm CET (UTC+1):

Horacio Casini (Bariloche Atomic Centre): Entanglement entropy and the renormalization group flow

Abstract: Entanglement entropy was originally introduced in the context of field theory as a possible statistical origin of black hole entropy. This idea has been much refined and transformed for holographic theories, giving place to many exciting new discoveries. In parallel, our understanding of entanglement entropy has been much increased in quantum field theories (no gravity). In this context, it has been shown that the strong subadditive property of entropy combined with Lorentz invariance is behind the irreversibility of the renormalization group flow determining the change of the theories with scale. We will review basic aspects of entanglement entropy in quantum field theory and the ideas leading to this irreversibility. We will end with some discussion around the question: what is lost along the renormalization group?

Login details for the talk will be distributed via newsletter (follow the link to subscribe).

Past events are available on our youtube channel.

Past events in the series:

  • Sep 16, 2020: Klaus Fredenhagen (U Hamburg): Local covariance and dynamics in algebraic quantum field theory


  • S. Hollands (U. Leipzig & MPI-MiS)
  • Y. Kawahigashi (U. Tokyo)
  • G. Lechner (FAU Erlangen)
  • R. Longo (Roma II)
  • K.-H. Rehren (U. Göttingen)

Contact: J. Zahn (U. Leipzig)