The Geneva Symmetry Group, Beyond Spacetime, and the Space and Time After Quantum Gravity Project are happy to present
Tushar Menon (University of Oxford):
Desperate spacetimes call for desperate measures: An argument for superspace realism
Wednesday, 30 November, 18:00 (note the new starting time!)
Room L107 at 2, Rue De-Candolle
Anyone who wishes to attend this talk is welcome. The talk will be 5 Einsteins (out of 5).
Abstract: It is widely believed that the endeavour of combining general relativity with quantum field theory will lead to an overhaul of our conception of spacetime. In the first part of this talk, I discuss which of our intuitions about spacetime ought to survive the move to a quantum theory of gravity. Building on the geometric functionalist approach to spacetime championed by Eleanor Knox, I argue for a more general algebraic characterisation of spacetime degrees of freedom that is dynamically informed. In the second part of the talk, I use this characterisation to argue for a spatiotemporal interpretation of superspace, an extension to Minkowski spacetime which incorporates a number of extra dimensions in order to account for transformation properties of bosonic and fermionic fields under supersymmetry.