Double limit of SpinfoamsConfirmed

by Athanasios Kogios (Perimeter Institute for Theoretical Physics)

Monday May 12, 2025, 2:30 p.m. → 3:00 p.m. America/Toronto

PI/4-400 - Space Room (Perimeter Institute for Theoretical Physics)

In this talk, I am going to present the current status of a project on the numerical exploration of the double limit of spinfoams. Spinfoams arose in the previous years as a path integral formulation of transition amplitudes between quantum geometries closely related to Loop Quantum Gravity (LQG). Naively, the procedure involves first a discretization of the continuous spacetime and then the quantization of the discrete variables leading us to the full quantum theory. What in other theories is called the semicalssical limit can in our setting be described as the double limit since in order to access the full, sclassical, continuous theory we need to "revert" both actions.