Stability and (quasi-)localization of gravitational fluctuations in Eddington-Inspired Born-Infeld brane system

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Stability and localization of the gravitational perturbations for a special brane system in Eddington-inspired Born-Infeld (EiBI) gravity were studied in [Phys.

• Rev.
• D 85, 124053 (2012)].
• In this paper, we show that the gravitational perturbations for a general brane system are stable, the four-dimensional graviton (massless KK graviton) can be localized on the brane, and the mass spectrum of massive KK gravitons are gapless and continuous.