论文标题
新的早期暗能量与当前LSS数据兼容
New Early Dark Energy is compatible with current LSS data
论文作者
论文摘要
最近，采用了大规模结构（LSS）数据的全形分析，以对一类早期的暗能量（EDE）模型提供新的约束。在本说明中，我们使用公开可用的Pybird代码对新的早期暗能量（NEDE）产生了类似的限制，该代码利用了LSS的有效现场理论。我们以NEDE的比例和触发场质量的比例研究NEDE基本模型，因为允许两个其他参数自由变化，同时简化了有关衰减流体部门的假设。包括对LSS的完整形状分析，以及宇宙微波背景（CMB），Baryonic声学振荡（BAO）和超新星（SN）数据的测量，我们报告$ H_0 = 71.2 \ pm 1.0〜 \ pm 1.0〜 \ pm 1.0〜 \ textrm \ textrm {mpc}^{ - 1} $（$ 68 \％$ c.l.）以及$ \ simeq 4 \，σ$ neede的不变分数的证据。这是对先前没有完整LSS数据的值的无关紧要的变化，$ h_0 = 71.4 \ pm 1.0〜 \ textrm {km} \，\ textrm {s}^{ - 1} { - 1} \，\，\ textrm {mpc}^{mpc}^{ - 1}^{ - 1} $ 68 $ C.L. $ 68 \％$ C.L.）。结果，虽然在包含其他LSS数据后无法改善NEDE拟合度，但它也不会受到它的不利影响，从而使其与LSS数据的当前约束兼容。实际上，我们发现证据表明LSS的有效领域理论对Nede采取了支持。
Recently a full-shape analysis of large-scale structure (LSS) data was employed to provide new constraints on a class of Early Dark Energy (EDE) models. In this note, we derive similar constraints on New Early Dark Energy (NEDE) using the publicly available PyBird code, which makes use of the effective field theory of LSS. We study the NEDE base model with the fraction of NEDE and the trigger field mass as two additional parameters allowed to vary freely while making simplifying assumptions about the decaying fluid sector. Including the full-shape analysis of LSS together with measurements of the cosmic microwave background (CMB), baryonic acoustic oscillations (BAO) and supernovae (SN) data, we report $ H_0= 71.2 \pm 1.0~\textrm{km}\, \textrm{s}^{-1}\, \textrm{Mpc}^{-1}$ ($68 \%$ C.L.) together with a $\simeq 4 \, σ$ evidence for a non-vanishing fraction of NEDE. This is an insignificant change to the value previously found without full-shape LSS data, $ H_0= 71.4 \pm 1.0~\textrm{km}\, \textrm{s}^{-1}\, \textrm{Mpc}^{-1} $ ($68 \%$ C.L.). As a result, while the NEDE fit cannot be improved upon the inclusion of additional LSS data, it is also not adversely affected by it, making it compatible with current constraints from LSS data. In fact, we find evidence that the effective field theory of LSS acts in favor of NEDE.
