What question did this study set out to answer?

The study aims to examine the expansion behavior of the universe using DESI DR2 data.

February 8, 2026

Possible evidences for physics beyond ΛCDM from DESI DR2 data

Key Points

The study aims to examine the expansion behavior of the universe using DESI DR2 data.
Analyzed DESI DR2 data with a model-independent method
Assessed confidence levels at different redshifts
Identified potential acceleration of the universe with more than 2.3 confidence level
Highlighted potential deceleration of the universe with greater than 1.7 confidence level
Other findings indicated with confidence level exceeding 1.6

Abstract

We analyze DESI DR2 data with a model-independent method and find that: (a) the expansion of the universe may speed up with a confidence level more than 2.3 Formula: see text at redshift Formula: see text; (b) the expansion of the universe may speed down with a confidence level greater than 1.7 Formula: see text at redshift Formula: see text; (c) Formula: see text with confidence level exceeding 1.6 Formula: see text at redshift Formula: see text.

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