Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data
Abstract
In the JWST and DESI era, the JWST high-redshift galaxy observations and DESI baryon acoustic oscillation (BAO) measurements severely challenge the standard ΛCDM model, while the H0 tension becomes increasingly prominent. In this work, we investigate the capability of the early dark energy (EDE) model to alleviate the H0 tension utilizing cosmic microwave background data from Planck, ACT, and SPT, BAO data from DESI, and ultraviolet luminosity function observations from the JWST. Within the canonical axion EDE framework, the CMB+DESI+JWST data significantly increase the H0 value to 71.58±1.05 km s−1 Mpc−1, alleviating the H0 tension to the 1.0σ level. Simultaneously, this model improves the fit to the JWST data and exhibits statistical performance significantly better than the ΛCDM model, with Δχ2tot = −18.26 and ΔDIC = −11.89. Our results highlight the complementary advantages of JWST high-redshift galaxy data alongside early- and late-time observations in testing EDE and alleviating the H0 tension.
Versions
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BibTeX
@misc{du2026resolving,
title = {{Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data}},
author = {Guo-Hong Du and Tian-Nuo Li and Lu Yin and Sheng-Han Zhou and Hao Wang and Jing-Fei Zhang and Xin Zhang},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2606.19090},
eprint = {2606.19090},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.19090},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data
AU - Guo-Hong Du
AU - Tian-Nuo Li
AU - Lu Yin
AU - Sheng-Han Zhou
AU - Hao Wang
AU - Jing-Fei Zhang
AU - Xin Zhang
PY - 2026
DA - 2026/08/27
PB - arXiv
DO - 10.48550/arxiv.2606.19090
UR - https://arxiv.org/abs/2606.19090
AB - In the JWST and DESI era, the JWST high-redshift galaxy observations and DESI baryon acoustic oscillation (BAO) measurements severely challenge the standard ΛCDM model, while the H_0 tension becomes increasingly prominent. In this work, we investigate the capability of the early dark energy (EDE) model to alleviate the H_0 tension utilizing cosmic microwave background data from Planck, ACT, and SPT, BAO data from DESI, and ultraviolet luminosity function observations from the JWST. Within the canonical axion EDE framework, the CMB+DESI+JWST data significantly increase the H_0 value to 71.58±1.05 km s^−1 Mpc^−1, alleviating the H_0 tension to the 1.0σ level. Simultaneously, this model improves the fit to the JWST data and exhibits statistical performance significantly better than the ΛCDM model, with Δχ^2_tot = −18.26 and ΔDIC = −11.89. Our results highlight the complementary advantages of JWST high-redshift galaxy data alongside early- and late-time observations in testing EDE and alleviating the H_0 tension.
ER -