|Wednesday 8 April 2020|
|Events for day: Tuesday 17 September 2019|
| 11:00 - 12:30 Weekly Seminar|
Optical Geometry and Constructive Gravity
Gravitational lensing provides an important probe of the background geometry. In this talk, I discuss light propagation on non-Lorentzian backgrounds which arise in two different contexts. Firstly, we consider optical geometry, which is a formalism in 3-space for light propagation in Lorentzian spacetimes: static spacetimes give rise to Riemannian optical geometry and stationary spacetimes have a Finslerian optical geometry of Randers type. I will review basic results as well as recent work using the Gauss-Bonnet theorem and curve-shortening flow. In particular, the first isoperimetric inequality in this context will be presented. Secondly, w ...
14:00 - 15:00 Weekly Seminar
Some aspects of glueball physics, challenges and questions in comparison with meson physics
Farmanieh Building, Seminar Room Class D (3rd floor)