Cosmological Dynamics of Hyperbolic Evolution Models in $f(Q,L_m)$ Gravity

TL;DR

This paper explores hyperbolic evolution models within $f(Q, ext{L}_m)$ gravity, demonstrating their viability in explaining cosmic acceleration and their behavior aligning with $ ext{Lambda}$CDM at late times.

Contribution

It introduces specific hyperbolic evolution functions in $f(Q, ext{L}_m)$ gravity and analyzes their cosmological viability through energy conditions and deceleration parameter profiles.

Findings

EoS parameter approaches -1 at late times

Models exhibit late-time acceleration similar to $ ext{Lambda}$CDM

Strong energy condition is violated, indicating acceleration

Abstract

This paper highlights cosmologically viable sine and cosine hyperbolic evolution functions in the framework of $f(Q,\mathcal{L}_m)$ gravity. The models have been tested to check the behavior of the equation of state (EoS) parameter under the variation of parametric values. The EoS parameter experiences a quintessence phase, and is approaching to $-1$ at late time. The models are showing inclined behaviour with the $\Lambda$CDM model at the late time. The viability of both the models is retested using the widely accepted energy conditions in both cases. The violation of the strong energy condition admits the accelerating behaviour of the models. The same has been explained through the analysis of the profile of deceleration parameter, which concretely supports the evidence that the models explain early deceleration to late time acceleration phenomena.