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arxiv: gr-qc/0410124 · v2 · submitted 2004-10-26 · 🌀 gr-qc

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Geodesic behavior of sudden future singularities

L. Fern\'andez-Jambrina , Ruth Lazkoz
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classification 🌀 gr-qc
keywords futuresingularitiessuddengeodesicgeodesicsalthoughanalyzebehavior
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In this paper we analyze the effect of recently proposed classes of sudden future singularities on causal geodesics of FLRW spacetimes. Geodesics are shown to be extendible and just the equations for geodesic deviation are singular, although tidal forces are not strong enough to produce a Big Rip. For the sake of completeness, we compare with the typical sudden future singularities of phantom cosmologies.

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  1. Geodesic completion of big bangs from emergent geometry

    gr-qc 2026-02 unverdicted novelty 5.0

    Phantom Chaplygin gas forces the Einstein-frame lapse to change sign smoothly while the causal-frame lapse stays positive, yielding a robust non-singular bounce even with extra matter.