Lasha Berezhiani (MPP Munich), Canonical Quantization of General Relativity and Quantum Resolution of Cosmological Backgrounds

Tuesday 24 Mar 2026, 11:15 → 12:30 Europe/Stockholm

Albano 3: 6228 - Mega (22 seats) (Albano Building 3)

Abstract: The main goal of this talk is to demonstrate that the canonical quantization of General Relativity, within BRST-invariant framework, leads to the healthy Hamiltonian flow. In particular, I will show that the classical properties of Einstein's gravity, such as vanishing bulk Hamiltonian, is realized merely as an expectation value in physical states. Most importantly, the physicality will be shown not to entail trivial time-evolution for correlation functions. In our framework, the quantization is performed on the Minkowski vacuum, while other classical backgrounds are considered as BRST-invariant coherent states built on top of it. I will conclude with the discussion of some of the aspects of our framework that are relevant for cosmology.