A new bigravity model with exclusively positive branes

Ian I. Kogan; Stavros Mouslopoulos; Antonios Papazoglou

doi:10.1016/S0370-2693(01)00096-X

A new bigravity model with exclusively positive branes

Ian I. Kogan^*
, Stavros Mouslopoulos
, Antonios Papazoglou

^*Corresponding author for this work

Research output: Journal Publication › Article › peer-review

75 Citations (Scopus)

Abstract

We propose a new "bigravity" model with two positive tension AdS₄ branes in AdS₅ bulk and no negative tension branes. The bounce of the "warp" factor mimics the effect of a negative brane and thus gives rise to an anomalously light graviton KK mode. This configuration satisfies the weak energy condition and has no ghost state. In addition, the extra polarization states of the massive graviton practically decouple and thus it does not contradict to Einsteinian gravity. However, the model has certain phenomenological difficulties associated with the presence of a negative cosmological constant on the branes.

Original language	English
Pages (from-to)	140-149
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	501
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(01)00096-X
Publication status	Published - 1 Mar 2001
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(01)00096-X

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AU - Kogan, Ian I.

AU - Mouslopoulos, Stavros

AU - Papazoglou, Antonios

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N2 - We propose a new "bigravity" model with two positive tension AdS4 branes in AdS5 bulk and no negative tension branes. The bounce of the "warp" factor mimics the effect of a negative brane and thus gives rise to an anomalously light graviton KK mode. This configuration satisfies the weak energy condition and has no ghost state. In addition, the extra polarization states of the massive graviton practically decouple and thus it does not contradict to Einsteinian gravity. However, the model has certain phenomenological difficulties associated with the presence of a negative cosmological constant on the branes.

AB - We propose a new "bigravity" model with two positive tension AdS4 branes in AdS5 bulk and no negative tension branes. The bounce of the "warp" factor mimics the effect of a negative brane and thus gives rise to an anomalously light graviton KK mode. This configuration satisfies the weak energy condition and has no ghost state. In addition, the extra polarization states of the massive graviton practically decouple and thus it does not contradict to Einsteinian gravity. However, the model has certain phenomenological difficulties associated with the presence of a negative cosmological constant on the branes.

UR - https://www.scopus.com/pages/publications/0035281608

U2 - 10.1016/S0370-2693(01)00096-X

DO - 10.1016/S0370-2693(01)00096-X

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

A new bigravity model with exclusively positive branes

Abstract

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