3 papers
astro-ph.CO2026
Testing Cosmic Distance Duality Relation and Transparency with DESI DR2
Xuwei Zhang, Xiaofeng Yang, Yunliang Ren +5
The Cosmic Distance Duality Relation (CDDR) is a fundamental principle of standard cosmology, linking luminosity (LD) and angular diameter distances (ADD). This work investigates t…
astro-ph.CO2026
Measurement of the Weyl Potential Evolution and Statistic from KiDS-1000, BOSS and 2dFLenS
Xuwei Zhang, Ming Zhang, Yunliang Ren +1
A recently developed model-independent approach to measuring the Weyl potential has shown some tensions with CDM (Lambda Cold Dark Matter) in DES (Dark Energy Survey) Y3 data.…
astro-ph.CO2026
How Dark Sector Equations of State Govern Interaction Signatures
Peng-Ju Wu, Ming Zhang, Shang-Jie Jin
Using late-Universe observations, we demonstrate that freeing dark energy and dark matter equations of state (EoS) dramatically alters the inferred strength and direction of their…