One of the drivers for this seminar series is to get a glimpse of the many research questions, ideas, and results linked to the activities in our division. The seminars are intended to be very informal and we make plenty of room for questions and discussions.
Speaker: Martin Cederwall
Title: "What are the symmetries of gravity?"
Overview
- Date:Starts 10 November 2023, 13:15Ends 10 November 2023, 14:15
- Location:Von Bahr, Soliden
- Language:Engelska
Abstract:
I will review, very sketchily, some of my recent work on extended geometry. The assumption is that there are symmetries that are not accidental and should be built into a “more fundamental” version of gravity. Such a model of gravity, or any model containing gravity, may be better suited to address questions concerning singularities, and may even provide clues to the emergence of space.
Although gravity displays a huge amount of local symmetry in the form of diffeomorphisms, certain classes of solutions display (solution-generating) symmetries that go beyond those that can be explained in terms of these (as Killing symmetries). This includes the Ehlers and Geroch symmetries obtained on dimensional reduction to 3 and 2 dimensions. Also, closed to space-like singularities – black hole or big bang singularities, the symmetries are even bigger.
Contact
- Professor, Subatomic, High Energy and Plasma Physics, Physics