Loop Quantum effects on Om-diagnostic and its Cosmological Implications

TL;DR

This paper investigates how Loop quantum gravity modifies the Om diagnostic and explores its implications for different dark energy models across the universe's history, highlighting significant early universe effects and diminishing influence over time.

Contribution

It reconstructs the Om diagnostic within Loop quantum gravity and compares dark energy models, revealing how quantum effects influence cosmic evolution trajectories.

Findings

Loop quantum effects are prominent in the early universe.

Quantum deviations decrease towards the present and future universe.

Trajectories distinguish dark energy models in both Einstein and Loop quantum gravity.

Abstract

In this paper we study the Loop quantum effects on the \textit{Om} diagnostic and subsequently on the universe. We reconstruct the \textit{Om} diagnostic in the background of Loop quantum gravity and then study the behaviour of various Chaplygin gas dark energy models using the modified diagnostic in a comparative scenario. The trajectories discriminate the various dark energy models from each other both in the Einstein gravity as well as Loop quantum gravity. The Loop quantum effects are also clearly noticeable from the trajectories in past, present and future universe. We see that the Loop quantum deviations are highly pronounced in the early universe, but alleviates as we tend towards the present universe and continue to decay in future. Thus it puts a big question on the effectiveness and consequently the suitability of loop quantum cosmology to explain the future universe.