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This research aims to reinterpret late-time cosmic expansion using a geometric approach in the FLRW cosmological framework.

April 27, 2026Open Access

Time Curvature in FLRW Cosmology: Supernova and Hubble Constraints

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This research aims to reinterpret late-time cosmic expansion using a geometric approach in the FLRW cosmological framework.
Utilized Pantheon+SH0ES dataset of 1701 Type Ia supernovae for analysis.
Constrained a time-curvature parameter through weighted least squares and chi-squared minimization.
Conducted robustness diagnostics over a range of redshifts.
Identified a preferred value of the time curvature parameter from the supernova-only fit.
Achieved a present-day Hubble constant of 73.0 km/s/Mpc, consistent with late-universe measurements.
Confirmed stability of results across redshift range without reliance on localized data subsets.

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Randomized trial constrains time curvature in FLRW cosmology using supernova data, implying geometric reinterpretation.

L. D. L. Nguyen (2026) studied this question.

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