2 papers
gr-qc2026
Possible evidences for physics beyond CDM from DESI DR2 data
Rong-Jia Yang
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 at redshift $z_{51…
gr-qc2025
Results from Hubble parameter data: oscillating dark energy?
Rong-Jia Yang
Using a model-independent analysis method which bases on the Lagrange mean value theorem for obtaining the derivative of the Hubble function, we analyze parameter data with…