Andres Franco Grisales: Rigidity and concircular symmetries
Time: Tue 2022-11-08 10.15 - 11.15
Location: Room 3418, Lindstedtsvägen 25
Participating: Andres Franco Grisales, KTH
We present a rigidity result in Lorentzian geometry, related to Bartnik’s conjecture, under the hypothesis of the existence of a concircular vector field with certain properties. We also study the relationship between two different notions of concircular vector fields found in the literature, and give conditions for a generalized Robertson–Walker spacetime to have a timelike concircular vector field.