Speaker
Gabriele Giacometti
(UniCT)
Description
We study the spontaneous breaking of diffeomorphism invariance using the proper-time non-perturbative flow equation in quantum gravity. In particular, we analyze the structure of the UV critical manifold of conformally reduced Einstein-Hilbert theory and study the occurrence of a non-trivial minimum for the conformal factor at Planckian energies. We argue that our result can be interpreted as the occurrence of a dynamically generated minimal length in quantum gravity.
Primary author
Gabriele Giacometti
(UniCT)
Co-authors
Alfio Maurizio Bonanno
(INFN, INAF, Unict)
Dr
Dario Zappalà
(Istituto Nazionale di Fisica Nucleare- Sez. Catania)
Prof.
Salvatore Plumari
(Dipartimento di Fisica e Astronomia, Università di Catania)
