Dec 11 – 15, 2023
Tsung-Dao Lee Institute
Asia/Shanghai timezone

Observable imprints of dark energy inhomogeneities

Dec 15, 2023, 2:45 PM
1h
Poster Poster

Speaker

Yue Nan (Kavli IPMU, the University of Tokyo)

Description

In light of large-scale anomalies in observations and tensions in important cosmological parameters like $H_0$ and $S_8$ of our Universe, we formulated possible dark energy inhomogeneities as the cosmological perturbations on superhorizon scales, sourced by some light scalar field. Based on this model, we discuss the possible impacts of the dark energy inhomogeneities on the anisotropic properties of observables, such as the luminosity distance, the matter power spectrum, and the cosmic microwave background (CMB) anisotropies.

Primary author

Yue Nan (Kavli IPMU, the University of Tokyo)

Co-authors

Prof. Kazuhiro Yamamoto (Kyushu University) Koki Yamashita Yuuki Sugiyama (Kyushu University)

Presentation materials

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