Let $<\cdot,\cdot>_z$ be a Lorentz metric on a manifold $\m = \mo \times \r$ such that $\mo$ is not compact. We prove the existence of infinitely many lightlike periodic trajectories in $\m$ by using variational methods and Ljusternik-Schnirelman theory.
Lightlike periodic trajectories in Space-Times
CANDELA, Anna Maria
1996-01-01
Abstract
Let $<\cdot,\cdot>_z$ be a Lorentz metric on a manifold $\m = \mo \times \r$ such that $\mo$ is not compact. We prove the existence of infinitely many lightlike periodic trajectories in $\m$ by using variational methods and Ljusternik-Schnirelman theory.File in questo prodotto:
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