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Bounce cosmology in generalized modified gravities

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arxiv 1902.06558 v2 pith:VU3BMJGV submitted 2019-02-18 gr-qc astro-ph.COhep-th

Georgios Minas , Emmanuel N. Saridakis , Panayiotis C. Stavrinos , Alkiviadis Triantafyllopoulos This is my paper · ORCID
classification gr-qcastro-ph.COhep-th
keywords bouncefinsler-likeeasilyfinslerdrivegeneralgeneralizedgeometries
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We investigate the bounce realization in the framework of generalized modified gravities arising from Finsler and Finsler-like geometries. In particular, the richer intrinsic geometrical structure is reflected in the appearance of extra degrees of freedom in the Friedmann equations that can drive the bounce. We examine various Finsler and Finsler-like constructions. In the cases of general very special relativity as well as of Finsler-like gravity on the tangent bundle we show that a bounce cannot be easily obtained. However, in the Finsler-Randers space the induced scalar anisotropy can fulfill the bounce conditions and bouncing solutions are easily obtained. Finally, for the general class of theories that include a nonlinear connection a new scalar field is induced, leading to a scalar-tensor structure that can easily drive a bounce. These features reveal the capabilities of Finsler and Finsler-like geometries.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Spherically symmetric, asymptotically flat Berwald vacuum solutions in Finsler gravity

    gr-qc 2026-06 unverdicted novelty 7.0 of 10

    Three families of non-Ricci-flat, asymptotically flat, SO(3)-symmetric Berwald vacuum solutions are derived as the first non-trivial exact solutions in Finsler gravity.

  2. Non-singular bounce solutions in Myrzakulov $f(R,T)$ gravity

    gr-qc 2025-01 reject novelty 4.0 of 10

    In Myrzakulov F(R,T) gravity, free connection functions can be chosen to produce matter-bounce backgrounds with a scale-invariant scalar power spectrum.

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