Study of cosmic evolution admitting thermodynamic analysis

Abstract This article examines the cosmic evolution in the framework of symmetric teleparallel theory, characterized by the function of non-metricity scalar $$(\mathcal {Q})$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>Q</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> . We use the e-folding number and reconstruction method with a suitable parametrization of the scale factor to obtain the functional form of symmetric teleparallel theory. Using this reconstructed model, we examine the behavior of different cosmographic parameters to demonstrate the bouncing scenarios of the cosmos by considering the contraction and expansion phases of cosmos before and after the bouncing point, respectively. It is found that the null energy condition is violated which shows that the singularity issue can be resolved in this extended theoretical framework. Moreover, we observe that the acceleration occurs near the bouncing point and the reconstructed model aligns with the current cosmic expansion. Finally, we check the validity of second law of thermodynamics in the bouncing framework of our model.

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Publication Details

Journal
The European Physical Journal C
Published
2024-10-16
DOI
https://doi.org/10.1140/epjc/s10052-024-13432-y
Citations
22
Primary Topic
Cosmology and Gravitation Theories
Type
article
Field-Weighted Citation Impact
7.29
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article

Study of cosmic evolution admitting thermodynamic analysis

Muhammad Sharif, Muhammad Zeeshan Gul, Nusrat Fatima
22 citations
The European Physical Journal C
Cosmology and Gravitation Theories
7.29
article

Study of cosmic evolution admitting thermodynamic analysis

Muhammad Sharif, Muhammad Zeeshan Gul, Nusrat Fatima
article en
22 citations

Abstract

Abstract This article examines the cosmic evolution in the framework of symmetric teleparallel theory, characterized by the function of non-metricity scalar $$(\mathcal {Q})$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>(</mml:mo> <mml:mi>Q</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> . We use the e-folding number and reconstruction method with a suitable parametrization of the scale factor to obtain the functional form of symmetric teleparallel theory. Using this reconstructed model, we examine the behavior of different cosmographic parameters to demonstrate the bouncing scenarios of the cosmos by considering the contraction and expansion phases of cosmos before and after the bouncing point, respectively. It is found that the null energy condition is violated which shows that the singularity issue can be resolved in this extended theoretical framework. Moreover, we observe that the acceleration occurs near the bouncing point and the reconstructed model aligns with the current cosmic expansion. Finally, we check the validity of second law of thermodynamics in the bouncing framework of our model.

The European Physical Journal CVol. 84(10)
University of Lahore (PK)
Peace, Justice and strong institutions
Openalex Percentile: Top 2%
Cosmology and Gravitation Theories
7.29
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Study of cosmic evolution admitting thermodynamic analysis — Muhammad Sharif, Muhammad Zeeshan Gul, et al. · The European Physical Journal C (2024) | TGRS Research Map | TGRS