2021/02/09 by Mattia Scomparin, Scomparin, Mattia
Physics and Astronomy · #83B05 #83D05 #83F05 #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)
paper · pdf · doi:10.48550/arxiv.2102.04676
openalex publication_date 2021/02/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss a no-go theorem for the novel Ricci-inverse theory of modified gravity. By considering a static spherically symmetric matter distribution embedded within a de Sitter cosmology, we demonstrate that achieving a stable Sub-Horizon non-relativistic Weak-Field limit is unattainable in any of the models previously proposed to mitigate certain cosmological and inflationary instabilities. We explore potential strategies to address this challenge, suggesting a novel methodology for constructing stable models that adhere to the Sub-Horizon non-relativistic Weak-Field limit. These models are shown to maintain full consistency with the predictions of General Relativity at small scales.