Duel of cosmological screening lengths
General Relativity and Quantum Cosmology
2020-04-30 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
Two distinct perturbative approaches have been recently formulated within General Relativity, arguing for the screening of gravity in the CDM Universe. In this paper we compare them and show that the offered screening concepts, each characterized by its own interaction range, can peacefully coexist. Accordingly, we advance a united scheme, determining the gravitational potential at all scales, including regions of nonlinear density contrasts, by means of a simple Helmholtz equation with the effective cosmological screening length. In addition, we claim that cosmic structures may not grow at distances above this Yukawa range and confront its current value with dimensions of the largest known objects in the Universe.
Keywords
Cite
@article{arxiv.2002.00437,
title = {Duel of cosmological screening lengths},
author = {Ezgi Canay and Maxim Eingorn},
journal= {arXiv preprint arXiv:2002.00437},
year = {2020}
}
Comments
17 pages, one nice figure