论文标题
$λ$ cdm作为宇宙学中的对称性
$Λ$CDM as a Noether Symmetry in Cosmology
论文作者
论文摘要
标准的$λ$ CDM宇宙学模型被配制为简单的修改重力，耦合到具有非平凡的隐藏非线性对称性对称性的单个标量场（“ darkon”）。构造中的主要成分是使用非 - 伊曼尼亚时期体积元素的形式主义。相关的Noether保守的电流会产生由两个添加剂组成的应力能量张量 - 动态生成的暗能量和暗物质组件之间不进行相互交互。 Noether对称性通过额外的标量“ Darkon”电势破裂自然会引入暗能和暗物质之间的相互作用。 $λ$ CDM模型与当前的“ Darkon” Noethy对称性之间的对应关系显示为线性顺序W.R.T.重力扰动。
The standard $Λ$CDM model of cosmology is formulated as a simple modified gravity coupled to a single scalar field ("darkon") possessing a non-trivial hidden nonlinear Noether symmetry. The main ingredient in the construction is the use of the formalism of non-Riemannian spacetime volume-elements. The associated Noether conserved current produces stress-energy tensor consisting of two additive parts -- dynamically generated dark energy and dark matter components non-interacting among themselves. Noether symmetry breaking via an additional scalar "darkon" potential introduces naturally an interaction between dark energy and dark matter. The correspondence between the $Λ$CDM model and the present "darkon" Noether symmetry is exhibited up to linear order w.r.t. gravity-matter perturbations.
