Edward Witten - Complex Metrics on Spacetime
Channel: Institut des Hautes Études Scientifiques (IHÉS)
Date: 2021-10-18

Edward Witten, IAS, Princeton

Complex Metrics on Spacetime

For a variety of reasons, it seems necessary to consider complex saddle points in the "Euclidean'' approach to black hole thermodynamics. But what class of complex saddle points is physically sensible? That will be the subject of this talk.