PT Journal
AU Bazeia, D
   Losano, L
   Menezes, R
   Olmo, GJ
   Rubiera-Garcia, D
TI Thick brane in f(R) gravity with Palatini dynamics
SO European Physical Journal C
JI Eur. Phys. J. C
PY 2015
BP 569 - 10pp
VL 75
DI 10.1140/epjc/s10052-015-3803-0
AB This work deals with modified gravity in five dimensional spacetime. We study a thick Palatini f(R) brane, that is, a braneworld scenario described by an anti-de Sitter warped geometry with a single extra dimension of infinite extent, sourced by real scalar field under the Palatini approach, where the metric and the connection are regarded as independent degrees of freedom. We consider a first-order framework which we use to provide exact solutions for the scalar field and warp factor. We also investigate a perturbative scenario such that the Palatini approach is implemented through a Lagrangian f(R)=R+ϵR^n, where the small parameter ϵ controls the deviation from the standard thick brane case.
ER