8 papers
Dark Energy in the DESI Era: A Brief Review of Evidence, Beyond-CDM Interpretations, and Tensions
Tian-Nuo Li, Guo-Hong Du, Hao Wang +3
The paper reviews recent DESI BAO measurements that hint at dynamical dark energy and examines various beyond‑ΛCDM scenarios and their implications for cosmological tensions like t…
Imprint of swampland-inspired coupled early dark energy
Hao Wang, Yun-Song Piao
Inspired by the Swampland Distance Conjecture, we investigate the cosmological implications of a fractional coupling between dark matter (DM) and early dark energy (EDE) in light o…
Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data
Guo-Hong Du, Tian-Nuo Li, Lu Yin +4
In the JWST and DESI era, the JWST high-redshift galaxy observations and DESI baryon acoustic oscillation (BAO) measurements severely challenge the standard CDM model, while th…
Impact of a negative cosmological constant on the reconstruction of dark energy in light of DESI BAO data
Hao Wang, Yun-Song Piao
An anti-de Sitter vacuum, corresponding to a negative cosmological constant (NCC), might coexist with one evolving positive dark energy component at low redshift and is hinted by t…
Dark energy after pre-recombination early dark energy in light of DESI DR2 and the latest ACT and SPT data
Hao Wang, Yun-Song Piao
It has been noted that with the pre-recombination early dark energy (EDE) resolution of Hubble tension, the preference of recent datasets for the evolving dark energy (DE) can be s…
Testing in light of the latest ACT and SPT data
Ze-Yu Peng, Jun-Qian Jiang, Hao Wang +1
It is commonly recognized that the primordial scalar spectral index is approximately , depending on the dataset. However, this view is being completely altered by…