Statefinder Analysis of Symmetric Teleparallel Cosmology

• DOI: 10.1002/andp.202200076
• Publication Date: 2022-05-11T14:56:06Z
• Authors: Raja Solanki; Pradyumn K. Sahoo
• Keywords: 0103 physical sciences; FOS: Physical sciences; General Relativity and Quantum Cosmology (gr-qc); 01 natural sciences; General Relativity and Quantum Cosmology

AbstractStatefinder diagnostics is a convenient method that can differentiate between the various dark energy models. In this article, the statefinder parameters in symmetric teleparallel cosmology are analyzed. The gravity theory is an alternative theory to general relativity where gravitational interactions attribute to the non‐metricity scalar Q. In the present work, two models are considered which contains a linear and a non‐linear form of non‐metricity scalar, specifically, and , where α and β are free parameters and then statefinder parameters are evaluated. The trajectory of the models in the plane are plotted. In addition, the physical behavior of different cosmological parameters such as density, deceleration, and the EoS parameters are analyzed. Further, Om diagnostic is used to differentiate the behavior of both models. It is found that both models predict that the present universe is accelerating due to the dark energy component evolving due to non‐metricity. Moreover, model I represents phantom type behavior while model II follows quintessence scenario.