Kavli Affiliate: Hu Zhan
| First 5 Authors: Weiyang Liu, Hu Zhan, Yan Gong, Xin Wang,
| Summary:
The analysis of the Cosmic Microwave Background (CMB) data acquired by the
Atacama Cosmology Telescope (ACT) and the large-scale ($elllesssim1300$)
Planck Telescope show a preference for the Early Dark Energy (EDE) theory,
which was set to alleviate the Hubble tension of the $Lambda$ Cold Dark Matter
($Lambda$CDM) model by decreasing the sound horizon $r_{s}$, and gives $H_{0}
approx 72$ km s$^{-1}$ Mpc$^{-1}$. However, the EDE model is commonly
questioned for exacerbating the $sigma_8$ tension on top of the $Lambda$CDM
model, and its lack of preference from the late-time matter power spectrum
observations, e.g., Baryon Oscillation Spectroscopic Survey (BOSS). In light of
the current obscurities, we inspect if the high redshift galaxy abundance,
i.e., Stellar Mass Function/Density (SMF/SMD) and Luminosity Function (LF), can
independently probe the EDE model. Our result shows that, compared to
$Lambda$CDM, the EDE model prediction at $z>10$ displays better consistency
with the unexpectedly high results observed by the James Webb Space Telescope
(JWST). At lower redshift, the EDE model only fits the most luminous/massive
end, with the majority of the data presenting better consistency with
$Lambda$CDM, implying that adding an extra luminosity/mass-sensitive
suppression mechanism of the galaxy formation is required for EDE to explain
all data around $zsim7-10$.
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