Cosmic hierarchy in $f(R)$ gravity

Abstract

In this contribution, we investigate hierarchical nature of large-scale structure clustering through the oscillatory nature of the solutions of the Schrödinger-like Friedmann equation in a modified gravitational background described by the $f(R)$ gravity theory. We find the cosmological solutions to the Schrödinger equation for different ranges of $n$ of the $R^n$ toy model for both radiation and matter-dominated epochs of the expansion history for open, flat, and closed spacetimes. Our results show that, for certain choices of the model parameters and initial conditions, the formation and distribution of cosmic structures might indeed be hierarchical, leading to a natural explanation for the breakdown of the cosmological principle on small scales.

15 pages and 20 figures

References in corpus (4)

• Modified Gravity and Cosmology
• Extended Theories of Gravity
• The dynamics of generalized Palatini Theories of Gravity
• Oscillating cosmological correlations in f(R) gravity