English

New Agegraphic Dark Energy Model in Modified Symmetric Teleparallel Theory

General Relativity and Quantum Cosmology 2025-01-03 v1

Abstract

In this manuscript, we examine the cosmological significance of the new agegraphic dark energy model by investigating different cosmological parameters such as the equation of state parameter, ωDωD\omega_{D}-\omega^{\prime}_{D} and the rsr-s planes in the framework of f(Q)f(\mathcal{Q}) theory. We consider flat Friedmann-Robertson-Walker universe model under interacting conditions between dark energy and dark matter. The equation of state parameter indicates a quintessence-like characteristic of the universe. The stability of the model is analyzed using the squared speed of sound parameter which demonstrates the unstable behavior of the new agegraphic dark energy model throughout the cosmic evolution. The freezing region is represented by the ωDωD\omega_{D}-\omega^{\prime}_{D} plane, while the Chaplygin gas model corresponds to the rsr-s plane. It is worthwhile to mention here that the interacting new agegraphic dark energy model addresses the cosmic coincidence problem by allowing the energy density ratio between dark energy and dark matter to evolve slowly over cosmic time.

Keywords

Cite

@article{arxiv.2501.00721,
  title  = {New Agegraphic Dark Energy Model in Modified Symmetric Teleparallel Theory},
  author = {Madiha Ajmal and M. Sharif},
  journal= {arXiv preprint arXiv:2501.00721},
  year   = {2025}
}

Comments

27 ages, 6 figures