论文标题
Einstein-Gauss-Bonnet重力：它是否与现代宇宙学兼容？
Einstein-Gauss-Bonnet gravity: is it compatible with modern cosmology?
论文作者
论文摘要
最近对爱因斯坦 - 加斯 - 邦纳特（EGB）模型进行了重新介绍，以分析重力的新后果，并适当修改爱因斯坦 - 希尔伯特的作用。 EGB宇宙学的后果主要是几何，在哈勃参数中具有较高的阶段值。从宇宙学的角度来看，本文介绍了有关模型的利弊的额外证据。当考虑宇宙学常数作为加速度的催化剂时，我们开始限制EGB模型的特征参数$α$。这些收缩是在背景宇宙学上使用观察性哈勃数据，Baryon声学振荡，IA类型的超新星，强烈的镜头系统和HII Galaxies的最新汇编而开发的。此外，我们实施了一个稳态分析，不仅发现了晚期加速度，而且还发现了与参数$α$相关的早期宇宙加速度。根据我们的镜头系统的结果，宇宙的演化永远不会达到非加速阶段，而是始终以加速状态呈现，是困扰EGB模型的可能性。
Einstein-Gauss-Bonnet (EGB) model is recently restudied in order to analyze new consequences in gravitation, modifying appropriately the Einstein-Hilbert action. The consequences in EGB cosmology are mainly geometric, with higher order values in the Hubble parameter. In this vein this paper is devoted to contribute with extra evidences about its pros and cons of the model from a cosmological point of view. We start constraining the characteristic parameter, $α$, of the EGB model when a cosmological constant as the catalyst for the acceleration is considered. The constrictions are developed at the background cosmology using Observational Hubble Data, Baryon Acoustic Oscillations, Supernovaes of the Ia type, Strong Lensing Systems and the recent compilation of HII Galaxies. Additionally, we implement a statefinder analysis where we found not only a late acceleration but also an early Universe acceleration which is associated with the parameter $α$. Based on our results of the lensing systems, the Universe evolution never reaches a non accelerated phase, instead it is always presented in an accelerated state, being a possible fault that afflicts the EGB model.
