Phantom phase power-law solution in $f(G)$ gravity
A. R. Rastkar, M. R. Setare, F. Darabi
TL;DR
This paper investigates power-law solutions in $f(G)$ gravity with perfect fluid, revealing a special form of $f(G)$ that allows a universe to enter a Phantom phase despite matter dominance and acceleration.
Contribution
It identifies a specific $f(G)$ form enabling Phantom phase solutions in a matter-dominated universe, expanding understanding of $f(G)$ gravity dynamics.
Findings
Power-law solutions exist for a special $f(G)$ form during Phantom phase.
Phantom solutions can occur despite matter dominance and acceleration.
The study clarifies conditions for Phantom phase in $f(G)$ gravity.
Abstract
Power-law solutions for gravity coupled with perfect fluid have been studied for spatially flat universe. It is shown that despite the matter dominated and accelerating power-law solutions, the power-law solution exists for an special form of when this universe enters a Phantom phase.
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