统一暗物质标量场宇宙学中的ISW效应：一种分析方法
ISW effect in Unified Dark Matter Scalar Field Cosmologies: an analytical approach
摘要：
本文在基于标量场的统一暗物质模型的框架内对积分萨克斯-沃尔夫效应进行了分析研究，旨在统一描述暗能量和暗物质。计算宇宙微波背景各向异性的温度功率谱，我们能够隔离这些贡献，可能会导致强烈偏离通常的ISW效应发生在$Λ$ CDM宇宙。这有助于突出统一暗物质模型中声速所起的关键作用。我们的处理是完全通用的，因为所有的结果只依赖于暗分量的声速，因此它可以应用于各种统一的模型，包括那些不描述的标量场，但依赖于一个单一的暗流体。
英文摘要：
We perform an analytical study of the Integrated Sachs-Wolfe (ISW) effect within the framework of Unified Dark Matter models based on a scalar field which aim at a unified description of dark energy and dark matter. Computing the temperature power spectrum of the Cosmic Microwave Background anisotropies we are able to isolate those contributions that can potentially lead to strong deviations from the usual ISW effect occurring in a $Λ$CDM universe. This helps to highlight the crucial role played by the sound speed in the Unified Dark Matter models. Our treatment is completely general in that all the results depend only on the speed of sound of the dark component and thus it can be applied to a variety of unified models, including those which are not described by a scalar field but relies on a single dark fluid.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
