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Abstract: We study the evolution of the dark energy parameter within the scope of aspatially flat and isotropic Friedmann-Robertson-Walker FRW model filled withbarotropic fluid and dark energy. To obtain the deterministic solution wechoose the scale factor $at = \sqrt{t e^{t}}$ which yields a time dependentdeceleration parameter DP. In doing so we consider the case minimally coupledwith dark energy to the perfect fluid as well as direct interaction with it.



Author: Hassan Amirhashchi, Anirudh Pradhan, Bijan Saha

Source: https://arxiv.org/







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