A comprehensive study of cosmic dynamics in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si5.svg" display="inline" id="d1e558"><mml:mrow><mml:mi>f</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mi>Q</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> theory

Sharif, M.; Gul, M. Zeeshan; Fatima, Nusrat

doi:10.1016/j.cjph.2024.07.010

Chinese Journal of Physics

2024

DOI: 10.1016/j.cjph.2024.07.010

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A comprehensive study of cosmic dynamics in f(Q) theory

M. Sharif,

M. Zeeshan Gul,

Nusrat Fatima

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2024

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Cited by 2 publications

References 63 publications

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Analysis of initial singularity admitting viable bounce models

Sharif,

Gul,

Fatima

2024

Physics of the Dark Universe

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Analysis of initial singularity admitting viable bounce models

Sharif,

Gul,

Fatima

2024

Physics of the Dark Universe

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Study of cosmic evolution admitting thermodynamic analysis

Sharif,

Gul,

Fatima

2024

Eur. Phys. J. C

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This article examines the cosmic evolution in the framework of symmetric teleparallel theory, characterized by the function of non-metricity scalar $$(\mathcal {Q})$$ ( Q ) . 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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A comprehensive study of cosmic dynamics in f(Q) theory

Cited by 2 publications

References 63 publications

Analysis of initial singularity admitting viable bounce models

Analysis of initial singularity admitting viable bounce models

Study of cosmic evolution admitting thermodynamic analysis

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