Spherically symmetric double layers and thin shells in Weyl-Einstein gravity. Theory and examples.

Junio 1, 2018
De 3:00pm hasta 4:00pm

IFT Seminar Room/Red Room

Theoretical Physics, general interest
Speaker: 
Berezin, V.
Institution: 
Institute for Nuclear Research of the Russian Academy of Sciences. Moscow, Russia
Location&Place: 

IFT Seminar Room/Red Room

Abstract: 
The role of the exact solutions in gravitational theories is impossible to overestimate. But the intrinsically nonlinear character of gravitational equations makes solving them a very difficult and problemtic task. This is why the investigations of the hypersurfaces where the matter energy-momentum tensor undergoes some discontinuities are so important. The physically interesting discontinuities are jumps (they can be viewed as an idealization of the shock waves) and thin shells (i.e., $\delta$-function distributions, describing some idealized matter sources including the potential barriers between two different phases during cosmological phase