Recent content by ifidamas

So I can't integrate a 2-form over a 2-submanifold which is a boundary of a nulla 3-submanifold?

I have this question: Is it possible to define an orientation for a null submanifold with boundary? In that case, is possible to use Stokes' theorem? In particular, there is a way to define a volume form on that submanifold?

I red this article today. In my opinion it is strictly related to the Idea of Hawking, Perry and Strominger. For the questions, imho 3) AdS or other non asymptotically flat spacetime is entirely a new story. The BMS group is an asymptotic symmetry group only for asymptotically flat...

The admin told me to introduce myself to the community. I'm a Theoretical Physicist who is working on his MSc thesis right now, about Information Paradox for BH and related questions. Hope to find useful threads and discussion in this great community!