Philosophy of Physics Seminar (Thursday - Week 5, HT19)

Philosophy of Physics

In the definition of a differential manifold in General Relativity (GR) the Hausdorff condition is typically assumed. In my talk I will investigate the consequences of dropping this condition. I will argue that there are good reasons to regard non-Hausdorff manifolds as basic objects of GR, together with Hausdorff manifolds. However, it is not clear whether they can be regarded as physically reasonable basic objects of GR. I will argue that some of the objections to their physical reasonability can be refuted if we understand them as representing a bundle of alternative spacetimes. This interpretation is supported by a theorem stating that every non-Hausdorff manifold can be seen as a result of gluing together some Hausdorff manifolds.

 

After the talk all are welcome for dinner at Brown's (at your own expense) - please let James Read know by Wednesday 13th February if you would like to attend. 


Philosophy of Physics Seminar Convenors for HT19: James Read and Simon Saunders

www.philosophy.ox.ac.uk//event/philosophy-of-physics-seminar-thursday-week-5-ht19
22/10/2019 19:33:06
List of site pages