In this paper we deal with lightlike geodesies in Lorentzian manifolds which are closed with respect to the spatial coordinates. We consider the case where the initial point is fixed or moves on a level of a given time function. The case where the initial point is free is also considered, under a periodicity condition on the metric.
Light rays having extreme points with the same spatial coordinates
Sampalmieri, Rosella
1999-01-01
Abstract
In this paper we deal with lightlike geodesies in Lorentzian manifolds which are closed with respect to the spatial coordinates. We consider the case where the initial point is fixed or moves on a level of a given time function. The case where the initial point is free is also considered, under a periodicity condition on the metric.File in questo prodotto:
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