Linear Stability of Closed Timelike Geodesics


Abstract in English

The linear stability of closed timelike geodesics (CTGs) is analyzed in two spacetimes with cylindrical sources, an infinite rotating dust cylinder, and a cylindrical cloud of static cosmic strings with a central spinning string. We also study the existence and linear stability of closed timelike curves in spacetimes that share some common features with the Godel universe (Godel-type spacetimes). In this case the existence of CTGs depends on the `background metric. The CTGs in a subclass of inhomogeneous stationary cosmological solutions of the Einstein-Maxwell equations with topology $ S^3times mathbb R$ are also examined.

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