Gravity In A Model Of Multi Branes Alternated Between Minkowski And AdS Spacetime In The Fifth Dimension

TL;DR

This paper develops a multi-brane model with alternating Minkowski and AdS spacetime in the fifth dimension, analyzing its gravitational properties and deviations from Newtonian gravity at various scales.

Contribution

It introduces a novel multi-brane configuration with alternating spacetime geometries and studies its implications for gravity localization and deviations.

Findings

Presence of graviton-like resonant states causing quasi-localized gravity

Existence of resonant states of massive KK modes affecting gravity

Model deviations from Newton's law consistent with observations without fine-tuning

Abstract

We construct in this paper a multi-brne model with Minkowski and AdS spacetime alternated in the fifth dimension and study the gravity on the brane of our universe. We will show that in this model there are both the graviton-like resonant states which generates the "quasi-localized gravity" and the resonant states of the massive KK mode. This model gives rise to gravity which deviates from the Newton gravitational potential at small and large scale which, however can be shown to be consistent with the observations in the absence of fine-tuning of the model parameters.