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arxiv 1807.05068 v3 pith:BYFQWTM7 submitted 2018-07-10 gr-qc

On a quadratic equation of state and a universe mildly bouncing above the Planck temperature

classification gr-qc
keywords temperatureaboveplanckquadraticstateuniverseacousticbaryonic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A 1-parameter class of quadratic equations of state is confronted with the Hubble diagram of supernovae and Baryonic Acoustic Oscillations. The fit is found to be as good as the one using the LambdaCDM model. The corresponding universe has no initial singularity, only a mild bounce at a temperature well above the Planck temperature.

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Cited by 2 Pith papers

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

  1. Phase-Space Analysis of Quadratic Dark Energy: Stable Attractors and Their Observational Signatures

    astro-ph.CO 2026-05 unverdicted novelty 4.0

    Phase-space analysis of a quadratic dark energy model finds that negative η produces stable phantom attractors while the effective equation of state approaches -1 asymptotically from both sides without crossing.

  2. Phase-Space Analysis of Quadratic Dark Energy: Stable Attractors and Their Observational Signatures

    astro-ph.CO 2026-05 unverdicted novelty 4.0

    Phase-space analysis of a quadratic dark energy model identifies stable attractors that approach the phantom divide asymptotically from both sides without crossing it.