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Journeys Through Antigravity?

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arxiv 1311.3671 v2 pith:YR2VZIWZ submitted 2013-11-14 hep-th gr-qc

John Joseph M. Carrasco , Wissam Chemissany , Renata Kallosh This is my paper · ORCID
classification hep-thgr-qc
keywords anisotropicantigravitycosmologicaleinsteininvariantjourneysproposedsingularities
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A possibility of journeys through antigravity has recently been proposed, with the suggestion that Weyl-invariant extension of scalars coupled to Einstein gravity allows for an unambiguous classical evolution through cosmological singularities in anisotropic spacetimes. We compute the Weyl invariant curvature squared and find that it blows up for the proposed anisotropic solution both at the Big Crunch as well as at the Big Bang. Therefore the cosmological singularities are not resolved by uplifting Einstein theory to a Weyl invariant model.

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Cited by 1 Pith paper

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  1. May Negative Mass Objects exist in the sky?

    gr-qc 2026-02 reject novelty 4.0 of 10

    Negative-mass objects are conjectured to arise from fluid-plus-cosmological-constant systems and are realized in reverse-engineered scalar and Gauss-Bonnet models, but the standard-gravity derivation contains a sign error.

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