Resumen de Connectivity by geodesics on globally hyperbolic spacetimes with a lightlike Killing vector field
Rossella Bartolo, Anna María Candela 
, José Luis Flores
Taking a globally hyperbolic spacetime endowed with a complete lightlike Killing vector field and a complete Cauchy hypersurface, we characterize the points which can be connected by geodesics. A straightforward consequence is the geodesic connectedness of globally hyperbolic generalized plane waves with a complete Cauchy hypersurface.
