Impact of the Hubble tension on the − contour

• DOI: 10.1016/j.physletb.2024.138588
• Publication Date: 2024-03-21T23:15:50Z
• Authors: Jun-Qian Jiang; Gen Ye; Yun-Song Piao
• Keywords: Tension (geology)

The injection of early dark energy (EDE) before the recombination, a possible resolution Hubble tension, will not only shift scalar spectral index ns towards ns=1, but also be likely to tighten current upper limit on tensor-to-scalar ratio r. In this work, with latest CMB datasets (Planck PR4, ACT, SPT and BICEP/Keck), as well BAO SN, we confirm result, discuss its implication inflation. We show that if happen live EDE, how different inflation models currently allowed would distinguished by planned observations, such CMB-S4 LiteBIRD.