cosmic expansion 1dark energy 1dark sector interaction 1gaussian processes 1nonparametric reconstruction 1
From the 1 of 2 linked papers with an AI index.
2 papers
astro-ph.CO2026
Breaking the Dark Sector Degeneracy with Nonparametric Expansion--Growth Reconstruction
Changyu You, Rong-Gen Cai, Tao Yang
The paper presents a data‑driven, non‑parametric method that simultaneously reconstructs the dark‑energy equation of state and possible dark‑sector interaction from expansion and g…
astro-ph.CO2025
Dynamical Dark Energy Implies a Coupled Dark Sector: Insights from DESI DR2 via a Data-Driven Approach
Changyu You, Dan Wang, Tao Yang
Recent observations from the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2) have revealed compelling evidence for dynamical dark energy, challenging the CDM p…