调和早期暗能量与 Harrison-Zeldovich 谱
宇宙学与河外天体物理
2024-02-28 v4 广义相对论与量子宇宙学
摘要
近期试图通过早期暗能量模型完全解决哈勃张力的工作似乎倾向于一个原初 Harrison-Zeldovich 宇宙,其标量谱极度尺度不变。在单场暴胀范式内恢复 Harrison-Zeldovich 谱似乎不可行,因而转向来自 curvaton 或 waterfall 模型的多场方案。在本快报中,我们通过非最小导数耦合在单场混沌暴胀中成功与 Harrison-Zeldovich 谱对齐,并且在标准 冷暗物质模型中曾被 Planck+BICEP/Keck 数据排除的混沌势,如今重新回到宇宙微波背景未来偏振观测的范围内。
引用
@article{arxiv.2310.12932,
title = {Reconciling early dark energy with a Harrison-Zeldovich spectrum},
author = {Chengjie Fu and Shao-Jiang Wang},
journal= {arXiv preprint arXiv:2310.12932},
year = {2024}
}
备注
v1, 7 pages, 3 figures; v2, references added; v3, title changed as required by the Editor, version accepted for publication in Phys. Rev. D as a Letter; v4, to match the published version