Seminar

Characterizing the existence of gravitational radiation at null infinity in asymptotically de Sitter (and flat) spacetimes

General Relativity, Geometry and Analysis: beyond the first 100 years after Einstein

15 October 10:00 - 11:00

Jose Senovilla - University of the Basque Country

I will present ongoing work that permits to determine the existence of gravitational radiation at null infinity (scri) in asymptotically de Sitter spacetimes. To that aim, I will first present a novel characterization of the existence of radiation at scri in asymptotically flat spacetimes whose main virtue is that it can perform equally well in the presence of a positive cosmological constant. Then, I will show the subtleties arising in the presence of a positive Lambda and how to deal with them. The existence of “News” tensors in this case will also be discussed. (In collaboration with F. Fernández-Álvarez).
Organizers
Lars Andersson
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Mattias Dahl
KTH Royal Institute of Technology
Philippe G. LeFloch
Sorbonne University
Richard Schoen
University of California, Irvine

Program
Contact

Mattias Dahl

dahl@kth.se

Other
information

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