Abstract In this work, we study a generalized interacting holographic dark energy model (GIHDEM) with a parameterized coupling constant in the spatially flat universe filled with the holographic dark energy (HDE) and dark matter (DM). More specifically, we introduce a new coupling parameter ξ ( z ) between HDE and DM as a function of redshift z which is parameterized by the well-known Chevalier-Polarski-Linder (CPL) parameterization and Wetterich one unlike other works. Our study shows that, for both parameterizations, there is a transition from a deceleration phase to an accelerated one for the universe which is in agreement with recent observations. It has been obtained that the present coincidence parameter value (∼0.37) in GIHDEM with suitable choice of the coupling parameter.

中文翻译：

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广义全息暗能量与宇宙巧合

摘要 在这项工作中，我们研究了在充满全息暗能量 (HDE) 和暗物质 (DM) 的空间平坦宇宙中具有参数化耦合常数的广义相互作用全息暗能量模型 (GIHDEM)。更具体地说，我们在 HDE 和 DM 之间引入了一个新的耦合参数 ξ ( z ) 作为红移 z 的函数，与其他作品不同，它由著名的 Chevalier-Polarski-Linder (CPL) 参数化和 Wetterich 参数化。我们的研究表明，对于这两种参数化，宇宙都从减速阶段过渡到加速阶段，这与最近的观察结果一致。It has been obtained that the present coincidence parameter value (∼0.37) in GIHDEM with suitable choice of the coupling parameter.