Linearized Modes in Extended and Critical Gravities

Details Linearized Modes in Extended and Critical Gravities Linearized Modes in Extended and Critical Gravities

2011-08-25

arxiv.org/abs/1108.5184v1

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 2 figures

Scientific paper

We construct explicit solutions for the linearized massive and massless spin-2, vector and scalar modes around the AdS spacetimes in diverse dimensions. These modes may arise in extended (super)gravities with higher curvature terms in general dimensions. Log modes in critical gravities can also be straightforwardly deduced. We analyze the properties of these modes and obtain the tachyon-free condition, which allows negative mass square for these modes. However, such modes may not satisfy the standard AdS boundary condition and can be truncated out from the spectrum.

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