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Simultaneously Reducing Tensions in Hubble Constant and Matter Density

Published on:

9 May 2024

Primary Category:

Cosmology and Nongalactic Astrophysics

Paper Authors:

Seyed Ali Hosseini Mansoori,

Hossein Moshafi

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Key Details

Presents K-essence model with coupling between potential & kinetic terms

Shows model aligns with constraints on inflationary parameters

Model reduces Hubble constant tension from CMB vs local measurements

Also alleviates tension in matter density fluctuation measurements

AI generated summary

Simultaneously Reducing Tensions in Hubble Constant and Matter Density

This paper introduces a K-essence cosmological model with a coupling between the scalar field potential and kinetic terms. It shows this model can simultaneously reduce tensions between early and late Universe measurements of the Hubble constant (to 2.2 sigma) and matter density fluctuations (to 0.82 sigma).

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