Maths HEP Lunchtime Seminars: Observational equivalence of conformally related frames
30 April 2010 13:00 in CM221
I argue that spacetimes which are conformally related are observationally indistinguishable. When applied to cosmology, this allows an extremely unconventional, apparently controversial picture that our universe may not be expanding at all. I show how such a picture of the universe can be observationally consistent.