论文标题
用新的耦合概括的三型深色能模型来缓解$ h_0 $张力
Relieve the $H_0$ tension with a new coupled generalized three-form dark energy model
论文作者
论文摘要
在这项工作中，我们提出了一个新的耦合的广义三型深色能模型，其中暗能量由三型场表示，而其他组件则由理想的流体表示。我们首先对新模型进行动态分析，并获得四个固定点，包括代表辐射主导宇宙的鞍点，一个代表物质主导宇宙的鞍点，以及两个代表两个占主导地位的宇宙的吸引子。然后，我们使用观察数据，包括宇宙微波背景（CMB）数据，Baryon声学振荡（BAO）数据以及IA类型IA Supernovae（SN IA）数据来限制耦合的耦合模型参数。 For comparison, we also consider the coupled three-form dark energy model, generalized three-form dark energy model, and $Λ$CDM model, we find that the coupled generalized three-form dark energy model is the only one model that can reduce the $H_0$ tension to a more acceptable level, with $H_0=70.1_{-1.5}^{+1.4}$ km/s/Mpc, which is consistent with R19的$2.0σ$置信度。我们还研究了耦合的广义三型深色能量模型的最佳拟合动力学行为，并表明我们的模型等同于五五明体的深色能量模型，在这种模型中，在早期时代，黑暗能量与某种形式的早期深色能量的表现，具有小的正态状态。
In this work we propose a new coupled generalized three-form dark energy model, in which dark energy are represented by a three-form field and other components are represented by ideal fluids. We first perform a dynamical analysis on the new model and obtain four fixed points, including a saddle point representing a radiation dominated Universe, a saddle point representing a matter dominated Universe, and two attractors representing two dark energy dominated Universes. We then use the observational data, including cosmic microwave background (CMB) data, baryon acoustic oscillations (BAO) data, and Type Ia supernovae (SN Ia) data to constrain the model parameters of the coupled generalized three-form dark energy model. For comparison, we also consider the coupled three-form dark energy model, generalized three-form dark energy model, and $Λ$CDM model, we find that the coupled generalized three-form dark energy model is the only one model that can reduce the $H_0$ tension to a more acceptable level, with $H_0=70.1_{-1.5}^{+1.4}$ km/s/Mpc, which is consistent with R19 at $2.0σ$ confidence level. We also investigate the best-fit dynamical behavior of the coupled generalized three-form dark energy model, and show that our model is equivalent to a quintom dark energy model, in which dark energy, at early epoch, behaves like some form of early dark energy with a small positive equation of state.
