https://doi.org/10.1140/epjc/s10052-018-6119-z
Regular Article - Theoretical Physics
Cosmological screening and the phantom braneworld model
1
Department of Physics, Indian Institute of Technology Ropar, Rupnagar, Punjab, 140 001, India
2
ITCP and Department of Physics, University of Crete, 700 13, Heraklion, Greece
* e-mail: sbhatta@iitrpr.ac.in
Received:
19
June
2018
Accepted:
31
July
2018
Published online:
10
August
2018
The scalar and vector cosmological perturbations at all length scales of our Universe are studied in the framework of the phantom braneworld model. The model is characterized by the parameter 
, with M and m the five- and four-dimensional Planck scales, respectively, and 
the Hubble parameter today, while 
recovers the 
model. Ignoring the backreaction due to the peculiar velocities and also the bulk cosmological constant, allows the explicit computation of the gravitational potentials, 
and 
. They exhibit exponentially decreasing screening behaviour characterized by a screening length which is a function of the quasidensity parameter 
.
© The Author(s), 2018
