4 papers
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…
Tightening constraints on primordial oscillations with latest ACT and SPT data
Ze-Yu Peng, Yun-Song Piao
The oscillation feature in primordial power spectrum (PPS), a fingerprint of not only a wide class of models of inflation but new physics, is of significant theoretical interest, a…
Hint of after DESI DR2 ?
Hao Wang, Ze-Yu Peng, Yun-Song Piao
In the report by BICEP/Keck collaborations, the tensor-to-scalar ratio is (95\% C.L.). However, recent datasets have preferred the evolving dark energy, which thus…
Dark energy and lensing anomaly in Planck CMB data
Ze-Yu Peng, Yun-Song Piao
In this paper, we investigate the impact of the lensing anomaly in Planck cosmic microwave background (CMB) data on the nature of dark energy (DE). We constrain the state equation…