TY  - JOUR
AU  - Bazeia, D.
AU  - Losano, L.
AU  - Menezes, R.
AU  - Olmo, G. J.
AU  - Rubiera-Garcia, D.
PY  - 2015
DA  - 2015//
TI  - Robustness of braneworld scenarios against tensorial perturbations
T2  - Class. Quantum Gravity
JO  - Classical and Quantum Gravity
SP  - 215011 - 10pp
VL  - 32
IS  - 21
PB  - Iop Publishing Ltd
KW  - brane-worlds
KW  - tensorial perturbations
KW  - metric-affine geometry
AB  - Inspired by the peculiarities of the effective geometry of crystalline structures, we reconsider thick brane scenarios from a metric-affine perspective. We show that for a rather general family of theories of gravity, whose Lagrangian is an arbitrary function of the metric and the Ricci tensor, the background and scalar field equations can be written in first-order form, and tensorial perturbations have a non negative definite spectrum, which makes them stable under linear perturbations regardless of the form of the gravity Lagrangian. We find, in particular, that the tensorial zero modes are exactly the same as predicted by Einstein's theory regardless of the scalar field and gravitational Lagrangians.
SN  - 0264-9381
UR  - http://arxiv.org/abs/1509.04895
UR  - https://doi.org/10.1088/0264-9381/32/21/215011
DO  - 10.1088/0264-9381/32/21/215011
LA  - English
N1  - WOS:000364921200014
ID  - Bazeia_etal2015
ER  -