Speaker
Prof.
Vladimir Chernov
(Dartmouth College, USA)
Description
We build on the ideas of Robert Low and show that null congruences correspond to Legendrian submanifolds in the space of all light rays of a spacetime. In particular this allows one to show that the null cone is a null hypersurface even past the conjugate locus. For the part of the null cone before the conjugate locus this was first observed by Roger Penrose.
Primary author
Prof.
Vladimir Chernov
(Dartmouth College, USA)
