New constraints on holographic dark energy with high-redshift galaxy observations from JWST
Abstract
Observations of high-redshift galaxies from the James Webb Space Telescope (JWST) provide a complementary probe of early structure formation. Meanwhile, DESI results have provided further indications of possible dynamical dark energy, prompting investigations of theoretically motivated dark energy models. In this work, we investigate holographic dark energy (HDE) and interacting holographic dark energy (IHDE) using JWST ultraviolet luminosity function measurements, cosmic microwave background (CMB) observations from Planck and ACT, DESI DR2 baryon acoustic oscillation measurements, and DES-Dovekie type~Ia supernova data. We find that JWST has little impact on the parameter constraints of ΛCDM and HDE but produces more pronounced changes in those of IHDE. For CMB+DESI+DES-Dovekie, adding JWST shifts the holographic parameter c from 1.270+0.146−0.096 to 1.091±0.095 and the interaction parameter β from 0.650+0.104−0.034 to 0.498+0.090−0.061, accompanied by an increase in Ωm and a decrease in S8. For the full data combination, χ2JWST decreases by approximately $7$ for both HDE and IHDE compared with ΛCDM, indicating improved fits to the high-redshift galaxy abundances. Our results highlight the complementary role of high-redshift galaxy observations in probing the HDE and IHDE models.
Related
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BibTeX
@misc{zhou2026constraints,
title = {{New constraints on holographic dark energy with high-redshift galaxy observations from JWST}},
author = {Sheng-Han Zhou and Tian-Nuo Li and Guo-Hong Du and Yi-Min Zhang and Yun-He Li and Jing-Fei Zhang and Xin Zhang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.35951},
eprint = {2610.35951},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.35951},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - New constraints on holographic dark energy with high-redshift galaxy observations from JWST
AU - Sheng-Han Zhou
AU - Tian-Nuo Li
AU - Guo-Hong Du
AU - Yi-Min Zhang
AU - Yun-He Li
AU - Jing-Fei Zhang
AU - Xin Zhang
PY - 2026
DA - 2026/10/24
PB - arXiv
DO - 10.48550/arxiv.2610.35951
UR - https://arxiv.org/abs/2610.35951
AB - Observations of high-redshift galaxies from the James Webb Space Telescope (JWST) provide a complementary probe of early structure formation. Meanwhile, DESI results have provided further indications of possible dynamical dark energy, prompting investigations of theoretically motivated dark energy models. In this work, we investigate holographic dark energy (HDE) and interacting holographic dark energy (IHDE) using JWST ultraviolet luminosity function measurements, cosmic microwave background (CMB) observations from Planck and ACT, DESI DR2 baryon acoustic oscillation measurements, and DES-Dovekie type~Ia supernova data. We find that JWST has little impact on the parameter constraints of ΛCDM and HDE but produces more pronounced changes in those of IHDE. For CMB+DESI+DES-Dovekie, adding JWST shifts the holographic parameter c from 1.270^+0.146_−0.096 to 1.091±0.095 and the interaction parameter β from 0.650^+0.104_−0.034 to 0.498^+0.090_−0.061, accompanied by an increase in Ω_m and a decrease in S_8. For the full data combination, χ^2_JWST decreases by approximately $7$ for both HDE and IHDE compared with ΛCDM, indicating improved fits to the high-redshift galaxy abundances. Our results highlight the complementary role of high-redshift galaxy observations in probing the HDE and IHDE models.
ER -