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Minimally Modified Gravity Fitting Planck Data Better Than ΛCDM

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Abstract

Here we present cosmology of a class of Minimally Modified Gravity theory dubbed as \(f(\mathcal{H})\) theory. After introducing a concrete model for the free function, we find that this cosmological model fits Planck data better than \(\Lambda \)CDM.

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Notes

  1. \(\operatorname{softplus} (x) = \ln(1 + {{e}^{x}})\).

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ACKNOWLEDGMENTS

Numerical computation in this work was carried out at the Yukawa Institute Computer Facility.

Funding

M.C.P. acknowledges the support from the Japanese Government (MEXT) scholarship for Research Student.

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Authors and Affiliations

  1. Center for Gravitational Physics, Yukawa Institute for Theoretical Physics, Kyoto University, 606-8502, Kyoto, Japan

    M. C. Pookkillath

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  1. M. C. Pookkillath
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Correspondence to M. C. Pookkillath.

Additional information

Paper presented at the Fourth Zeldovich meeting, an international conference in honor of Ya.B. Zeldovich held in Minsk, Belarus, on September 7–11, 2020. Published by the recommendation of the special editors: S.Ya. Kilin, R. Ruffini, and G.V. Vereshchagin.

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Pookkillath, M.C. Minimally Modified Gravity Fitting Planck Data Better Than ΛCDM. Astron. Rep. 65, 1021–1025 (2021). https://doi.org/10.1134/S1063772921100279

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  • DOI: https://doi.org/10.1134/S1063772921100279

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