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Evolution of Dark Energy Perturbations for Slotheon Field and Power Spectrum

Within the framework of modified gravity model namely Slotheon model, inspired by the theory of extra dimensions, we explore the behaviour of Dark Energy and the perturbations thereof. The Dark Energy and matter perturbations equations are then derived and solved numerically by defining certain dimensionless variables and properly chosen initial conditions. The results are compared with those for standard quintessence model and $Λ$CDM model. The matter power spectrum is obtained and also compared with that for $Λ$CDM model. It appears that Dark Energy in Slotheon model is more akin to that for $Λ$CDM model than the standard quintessence model.

preprint2019arXivOpen access
Upala MukhopadhyayDebasish MajumdarDebabrata Adak
gr-qc
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Open access3 authors1 topic
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Upala MukhopadhyayDebasish MajumdarDebabrata Adak

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