作为 Ricci 孤立子的暗物质
Dark matter as a Ricci soliton
AI总结：
该研究提出成团重子物质可对应由密度决定四半径的紧致四维 Einstein Ricci 孤立子，其流形具有 FLRW 度规并随时间膨胀，从而在低密度下重现暗物质效应。
摘要：
本文将成团重子物质视为一种球对称正压流体，并将其与一个紧致四维 Einstein 流形相联系，该流形的四半径由流体密度决定。作者进一步研究了这些由物质生成的流形的性质，并表明由于其均匀性和各向同性，它们呈现 FLRW 度规性质，并随宇宙时间膨胀。在星团、星系和星系团中遇到的低密度情形下，这些流形尺度很大，并表现出目前归因于暗物质的相同性质。
英文摘要：
In this paper we consider clumped baryonic matter as a spherically symmetric barotropic fluid associated with a compact four-dimensional Einstein manifold with a four-radius that is determined by the fluid density. We further investigate the properties of these matter generated manifolds and show that because of their homogeneity and isotropy they exhibit FLRW metric properties and expand with cosmic time. At low densities such as those encountered in star clusters, galaxies and galactic clusters, these manifolds are large and show the same properties that are currently attributed to dark matter.
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。
