Scientific Calendar Event



Description

Abstract:
In this talk, I will review recent works done in collaboration with L. Ciambelli and R. Leigh, focusing on the non-perturbative characterization of the gravitational phase space along null boundaries. I will present the construction of the Carrollian curved geometry, the Poisson bracket and discuss the construction of  a field-dependent time called dressing time that allows the construction of a positive definite boost generator for expanding null surfaces.
If time permits, I will discuss some elements of the quantization and the appearance of a crucial Quantum central charge and the resolution of the problem of time. I will also discuss how these results connect to the celestial holography program when one treats the null boundary as an asymptotically null one.
I will only sketch why these results are important to address the upcoming interferometry experiments that are now being under construction to measure the light ray  vacuum fluctuations.



To join via Zoom:
https://zoom.us/j/96460404622

Meeting ID: 964 6040 4622
 
Passcode: 204513
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