HEP Colloquia 2025

by Jerz Kowalski-Glikman (National Centre For Nuclear Physics, Warsaw And University Of Wroclaw)

Wednesday 26 Nov 2025, 14:30 → 16:00 Europe/Rome

Sala Consiliare (Department of Physics)

From Corner Proposal to Emergence of the Area Law 

In this talk, I will present the construction of the corner algebra associated with a region, emphasizing its analogy with the Poincaré algebra in Quantum Field Theory. I will then turn to the toy model of two-dimensional quantum gravity, illustrating how segments can be cut and glued. Building on this framework, I will show how to compute the entanglement entropy between a segment and its complement. Finally, by exploiting the relation between two-dimensional gravity and spherically symmetric four-dimensional spacetimes, I will demonstrate that, in an appropriate semiclassical limit, the resulting entanglement entropy reproduces the Bekenstein–Hawking area law.