Geometry Seminar – Anna María Candela

Detalles de Evento

Title: Geodesic Connectedness in Spacetimes with Lightlike Killing Vector Fields

Speaker: Anna María Candela (Università degli Studi di Bari)

Abstract:In the last years a great deal of e ort has been invested in order to investigate the existence of geodesics connecting two given points in Lorentzian manifolds as a statement similar to the Hopf-Rinow Theorem is not known for spacetimes. In particular, some geometric sufficient conditions have been introduced so that stationary spacetimes, i.e. spacetimes equipped with a timelike Killing vector eld, are geodesically connected. Unluckily, a similar global result is not true for space- times equipped with a lightlike Killing vector eld. Anyway, points connected by geodesics can be characterized. Joint works with Rossella Bartolo and José Luis Flores.

26 September 2016, 12:30, 1st floor Seminar room, IEMath-GR

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