https://doi.org/10.1140/epjc/s10052-020-8165-6
Regular Article - Theoretical Physics
Evolution of dark energy perturbations for Slotheon field and power spectrum
1
Astroparticle Physics and Cosmology Division, Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata, 700064, India
2
Department of Physics, Government General Degree College, Singur, Hooghly, West Bengal, 712409, India
* e-mail: upala.mukhopadhyay@saha.ac.in
Received:
20
January
2020
Accepted:
16
June
2020
Published online:
30
June
2020
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 
CDM model. The matter power spectrum is obtained and also compared with that for CDM model. It appears that Dark Energy in Slotheon model is more akin to that for CDM model than the standard quintessence model.
© The Author(s), 2020
