论文标题
新的压力参数宇宙学模型
A new pressure-parametric cosmological model
论文作者
论文摘要
我们提出了一个压力参数模型，以研究黑暗扇区宇宙常数（CC）行为的微小偏差，从而加速了宇宙的扩张。来自宇宙微波背景（CMB）各向异性，Baryonic声学振荡（BAO），IA型Supernovae（SN IA）观察结果的数据应用于限制模型参数。约束结果表明，此类模型也患有$ H_0 $张力。为了更大地实现该模型，我们将其重建了典型和幻影标量字段，并发现尽管该模型预测了过去和现在的Quintessence诱导的宇宙加速度，但在未来的某个时刻，Dark Energy的密度具有增加。
We put forward a pressure-parametric model to study the tiny deviation from cosmological constant(CC) behavior of the dark sector accelerating the expansion of the Universe. Data from cosmic microwave background (CMB) anisotropies, baryonic acoustic oscillations (BAO), Type Ia supernovae (SN Ia) observation are applied to constrict the model parameters. The constraint results show that such model suffers with $H_0$ tension as well. To realize this model more physically, we reconstruct it with the quintessence and phantom scalar fields, and find out that although the model predicts a quintessence-induced acceleration of the Universe at past and present, at some moment of the future, dark energy's density have a disposition to increase.
