3 papers
hep-ph2026
Localized Steps toward ACT-Favored Inflation
Kai-Ge Zhang, Chengjie Fu, Jian-Feng He +1
Recent ACT measurements favor a scalar spectral index larger than the Planck value, posing a challenge to many single-field slow-roll inflation models. We show that a smooth, local…
astro-ph.CO2025
Harrison-Zeldovich attractor: From Planck to ACT results
Chengjie Fu, Di Lu, Shao-Jiang Wang
In the era of Planck cosmology, the inflationary paradigm is best fitted toward the cosmological attractor scenarios, including the induced inflation, universal attractors, conform…
astro-ph.CO2023
Reconciling early dark energy with a Harrison-Zeldovich spectrum
Chengjie Fu, Shao-Jiang Wang
Recent attempts to fully resolve the Hubble tension from early dark energy models seem to favor a primordial Harrison-Zeldovich universe with its scalar spectrum being extremely sc…