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$\alpha$-attractor inflation: Models and predictions

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arxiv 2212.13363 v2 pith:7QGMF65T submitted 2022-12-27 astro-ph.CO hep-phhep-th

Sukannya Bhattacharya , Koushik Dutta , Mayukh R. Gangopadhyay , Anshuman Maharana This is my paper · ORCID
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abstract

The $\alpha$-attractor models are some of the most interesting models of inflation from the point of view of upcoming observations in cosmology and also attractive from the point of view of supergravity. We confront representative models of exponential and polynomial $\alpha$-attractors with the latest cosmological data (Planck'18+BICEP2/Keck array) to obtain predictions and best fit values of model parameters. The analysis is done by making use of ModeChord and CosmoMC plugged together via PolyChord.

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Cited by 3 Pith papers

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

  1. Inflation with nondynamic distortion to leading order in slow roll

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    Nondynamic distortion integrated out of a 13-parameter metric-affine action sources the entire inflaton kinetic term; monomial models depend only on exponent ratio while α-attractors recover modified Starobinsky observables.

  2. Behaviour of $\alpha$-attractors in Warm Inflation

    astro-ph.CO 2025-06 reject novelty 5.0 of 10

    In strongly dissipative warm inflation, T, E, and polynomial alpha-attractor models lose the cold-inflation attractor convergence in the n_s-r plane.

  3. Starobinsky Inflation with T-Model Kaehler Geometries

    hep-ph 2025-02 conditional novelty 5.0 of 10

    Starobinsky-like inflation is embedded in supergravity via T-model Kähler potentials, yielding ns in the range 0.961 to 0.969 and a tensor-to-scalar ratio that rises with Kähler curvature.

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