Bridging high and low energies in search of quantum gravity - 2025 Cost Action CA23130 First Annual Conference

Session

WG5 Connection between low-energy and high-energy quantum gravity 1

9 Jul 2025, 15:20

Amphithéâtre Charpak (LPNHE)

91. Asymptotic symmetries and observables in 4d gravity

Ana-Maria Raclariu

09/07/2025, 15:20

Invited oral contribution (hot topic)

In this talk I will review recent progress in our understanding of large-distance features of gravity in (3+1)-dimensional asymptotically flat spacetimes. I will explain how one can extract from the asymptotic expansions of Einstein’s equations a tower of charges whose conservation governs the low-energy (or soft) expansion of a graviton to all orders. The first in this tower are...

13. Quantum Coherence from Quantum Spacetime

Iarley Lobo (Federal University of Paraíba)

09/07/2025, 16:00

Oral contribution

We investigate the emergence of quantum coherence and quantum correlations in a two-particle system with deformed symmetries arising from the quantum nature of spacetime. We demonstrate that the deformation of energy-momentum composition induces a momentum-dependent interaction that counteracts the decoherence effects described by the Lindblad equation in quantum spacetime. This interplay...