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Cornering Extended Starobinsky Inflation with CMB and SKA

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arxiv 2210.05698 v2 pith:JGY6ZJOV submitted 2022-10-11 astro-ph.CO gr-qchep-ph

Tanmoy Modak , Lennart Röver , Björn Malte Schäfer , Benedikt Schosser , Tilman Plehn This is my paper · ORCID
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Starobinsky inflation is an attractive, fundamental model to explain the Planck measurements, and its higher-order extension may allow us to probe quantum gravity effects. We show that future CMB data combined with the 21cm intensity map from SKA will meaningfully probe such an extended Starobinsky model. A combined analysis will provide a precise measurement and intriguing insight into inflationary dynamics, even accounting for correlations with astrophysical parameters.

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Forward citations

Cited by 4 Pith papers

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    For the sixth-order gravity action (2.1), the exact FLRW de Sitter solution is unstable whenever 3γ1+γ2<0, while the second-order limit admits a stable de Sitter attractor.

  4. The effective phase space and $e$-folding of the Starobinsky and extended Starobinsky model of inflation

    gr-qc 2025-01 conditional novelty 6.0 of 10

    Under the Remmen-Carroll measure, the expected total e-folds for Starobinsky inflation are only about 3.5 to 4 for observationally allowed field values.

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