Séminaires sur les aspects théoriques et expérimentaux de la gravitation

An adapted coordinate system for light-signal-based cosmology

by Prof. Gabriele VENEZIANO (CERN, Collège de France & New York University)

Europe/Paris
Amphithéâtre Léon Motchane (IHES)

Amphithéâtre Léon Motchane

IHES

Le Bois Marie 35, route de Chartres 91440 Bures-sur-Yvette
Description
The "geodetic light-cone gauge" is a convenient coordinate system for the observation of light-like signals by a geodetic observer.
 
After introducing it I will give two examples on how it can be applied to physically interesting problems: i)  the precision determination of dark-energy parameters;  ii) the description of strong gravitational lensing. If time allows I will also mention some very recent work on gravitational bremsstrahlung from massless particle collisions.
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