IPM Calendar 
Wednesday 8 April 2020   Today  
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
HEPCo Group
Some aspects of glueball physics, challenges and questions in comparison with meson physics


Farmanieh Building, Seminar Room Class D (3rd floor)