受沼泽地启发的耦合早期暗能量印记
Imprint of swampland-inspired coupled early dark energy
AI总结:
基于沼泽地距离猜想,利用条件归一化流网络对高维参数空间采样,联合分析多项数据,研究暗物质与早期暗能量分数耦合的宇宙学含义,发现 EDE 势构造会改变对晚期暗能量的宇宙学约束。
摘要:
受沼泽地距离猜想的启发,我们根据最近的 DESI DR2 BAO 数据,研究了暗物质(DM)与早期暗能量(EDE)之间分数耦合的宇宙学含义。我们使用条件归一化流网络对高维参数空间进行有效采样,并对普朗克 CMB 数据、DESI DR2 BAO、PantheonPlus 超新星和 SH0ES 进行联合分析。我们发现,当考虑 DM 与 EDE 之间的耦合时,EDE 势的详细构造可能会改变对晚期暗能量的宇宙学约束。
英文摘要:
Inspired by the Swampland Distance Conjecture, we investigate the cosmological implications of a fractional coupling between dark matter (DM) and early dark energy (EDE) in light of the recent DESI DR2 BAO data. We use a conditional normalizing flow network to efficiently sample the high-dimensional parameter space, and perform a joint analysis of Planck CMB data, DESI DR2 BAO, PantheonPlus supernovae and SH0ES. We find that the detailed construction of the EDE potential beyond the mere existence of an EDE component possibly alter cosmological constraints on late-time dark energy when the coupling between DM and EDE is considered.
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