Asymptotic structure in higher dimensional spacetimes and its classification

Abstract: I will discuss the asymptotic structure in higher dimensional spacetimes, especially at null infinity of asymptotically flat spacetimes. The asymptotic structure at null infinity contains all dynamical information of spacetime such as radiations of mass and angular momentum. By solving Einstein equations explicitly, we clarify the asymptotic structure at null infinity in arbitrary dimensions and show the difference between in four and higher dimensions. Finally, I will briefly comment on its classification and the relation with the Petrov classification. 

Slides