Logarithmic Potential Braneworld in Light of the Recent Experiment Observation

Abstract

In the loop inflation standard case, the spectral index ns depends only on the e-folds number N, and it is larger than the value given by observational measurements, the ratio of tensor to scalar perturbations r is very small so that the gravitational waves are negligible. Therefore, we reconsider this model in the framework of the Randall-Sundrum II braneworld scenario. In this context, we have computed and discussed the perturbation of the scalar curvature and determined the energy scale V0; and the brane tension value λ. We showed that the various inflationary spectrum perturbation parameters (ns, r and dns/d(ln k) ) depend on N and on the coupling constant α, and we reproduce the central value of the first parameter ns ∼ 0.96. Also, the ratio r and the running dns/d(ln k) are in perfect agreement with the experimental observations (Planck 2015).

Published
Dec 15, 2018
How to Cite
FERRICHA-ALAMI, M. et al. Logarithmic Potential Braneworld in Light of the Recent Experiment Observation. Revista Cubana de Física, [S.l.], v. 35, n. 2, p. 86-90, dec. 2018. ISSN 2224-7939. Available at: <http://revistacubanadefisica.org/index.php/rcf/article/view/RCF_2018_35_86>. Date accessed: 22 mar. 2019.
Section
Original Articles