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Surprising consequences of a positive cosmological constant




Expositor: Beatrice Bonga
Afiliación: Perimeter Institute, Waterloo
Fecha/Hora: Jueves 22 de Noviembre de 2018 a las 16:00




Resumen
The study of isolated systems has been vastly successful in the context of vanishing cosmological constant, Λ=0. However, there is no physically useful notion of asymptotics for the universe we inhabit with Λ > 0. The full non linear framework is still under development, but some interesting results at the linearized level have been obtained. I will focus on the conceptual subtleties that arise at the linearized level and discuss the quadrupole formula for gravitational radiation as well as some recent developments.


Lugar: Ático, edificio Martha Muse
Tipo de evento: Seminario Regular
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