Non-flat pilgrim dark energy FRW models in modified gravity

Rani, Shamaila; Jawad, Abdul; Salako, Ines G.; Azhar, Nadeem

doi:10.1007/s10509-016-2868-z

Cited by 5 publications

(2 citation statements)

References 56 publications

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“…Keep in mind an interaction between pilgrim dark energy as a future event and apparent horizons with cold dark matter. Rani et al (2016) studied the cosmic acceleration in dynamical modified Chern-Simons gravity in the framework of non-flat FRW Universe.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Reconstructed Modified Symmetric Teleparallel f(Q) Gravity

Myrzakulov

Shekh

Mussatayeva

et al. 2022

Front. Astron. Space Sci.

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The existing analysis reports a reconstruction scheme of the newly proposed gravity say f(Q) gravity through the scale factor of the form a(t)=a0tn=11+z by describing the power-law cosmology. The reconstructed f(Q) gravity models disclosed how this modified gravity model is capable to replicate dissimilar epochs of the cosmological history. Also, the reconstructed f(Q) gravity models are castoff to develop the expressions for density and pressure and the equation of state parameter. We reconstruct two cases of interacting fluid scenario ghost and pilgrim dark energy with pressureless dark matter. The physical behavior of the models is talked over the evolution of the Universe is accelerated. Moreover, the well-known cosmological planes i.e., (ωD−ωD′) and (r − s) constructed for our models, also include a comparison of our findings of these dynamical parameters with observational constraints. It is also quite interesting to mention here that the results of the equation of state parameter, (ωD−ωD′) and (r − s)-planes coincide with the modern observational data.

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Section: Introductionmentioning

confidence: 99%

Analysis of Reconstructed Modified Symmetric Teleparallel f(Q) Gravity

Myrzakulov

Shekh

Mussatayeva

et al. 2022

Front. Astron. Space Sci.

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“…They found that the first and the second laws of thermodynamics are valid inside the apparent horizon, while they break down inside the event horizon. Rani et al investigated the validity of the GSLT for a model of pilgrim dark energy interacting with cold dark matter in the frame-work of dynamical Chern-Simons modified gravity in a nonflat FRW universe [20]. Sharif et al [21] analyzed non-equilibrium aspects of thermodynamics on the apparent horizon of FRW universe in f (R, T ) gravity along with the validity of GSLT.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of FRW universe with Chaplygin gas models

Chakraborty

Guha

2019

Gen Relativ Gravit

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In this paper we have examined the validity of the generalized second law of thermodynamics (GSLT) in an expanding Friedmann Robertson Walker (FRW) universe filled with different variants of Chaplygin gases. Assuming that the universe is a closed system bounded by the cosmological horizon, we first present the general prescription for the rate of change of total entropy on the boundary. In the subsequent part we have analyzed the validity of the generalised second law of thermodynamics on the cosmological apparent horizon and the cosmological event horizon for different Chaplygin gas models of the universe. The analysis is supported with the help of suitable graphs to clarify the status of the GSLT on the cosmological horizons. In the case of the cosmological apparent horizon we have found that some of these models always obey the GSLT, whereas the validity of GSLT on the cosmological event horizon of all these models depend on the choice of free parameters in the respective models.

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