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arXiv · 2209.00719

A spherically symmetric gravitational solution of nearly conformally flat metric~measure~space

Samaneh Oghbaiee·Nafiseh Rahmanpour·Hossein Shojaie
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Abstract

In this manuscript, we study the nearly flat approximation of a conformally invariant gravitational theory in metric measure space (MMS). In addition, we investigate the transformation of the energy-momentum tensor in this context and obtain the vacuum solution of MMS and its weak field limit in the spherically symmetric coordinates. We show that while it is already a vacuum solution, it can simulate dark matter when restricted to the framework of general relativity, i.e., a symmetry-broken conformal frame. This is done by employing a density function which is an essential part of MMS. We derive an equation for the density function for a general profile of a rotation curve obtained from observations. Specifically, the density function corresponding to two well-known profiles PSS and NFW are provided.

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Samaneh Oghbaiee, Nafiseh Rahmanpour, Hossein Shojaie. 2022-09-01. A spherically symmetric gravitational solution of nearly conformally flat metric~measure~space. https://doi.org/10.1016/j.dark.2023.101196

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