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Jan Dereziński

The Feynman propagator on curved spacetimes
Lundi, 19 Février, 2018 - 13:30
Résumé : 

The Klein-Gordon equation has several natural Green's functions, often called propagators. The so-called Feynman propagator, used in quantum field theory, has a clear definition on static spacetimes. I will discuss, partly on a heuristic level, its possible generalizations to the non-static case. I will also describe a curious, partly open problem about the self-adjointness of the Klein-Gordon operator. I will also describe how to compute the singularities around the diagonal using a special geometric version of pseudodifferential calculus.

Institution de l'orateur : 
Université de Varsovie
Thème de recherche : 
Physique mathématique
Salle : 
Salle 1, tour IRMA
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