Special Massive Spin-2 on de Sitter Space

Details Special Massive Spin-2 on de Sitter Space Special Massive Spin-2 on de Sitter Space

2008-01-14

arxiv.org/abs/0801.2165v2

JCAP0802:014,2008

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, reference added, JCAP version

Scientific paper

10.1088/1475-7516/2008/02/014

The theory of a massive spin-2 state on the de Sitter space -- with the mass squared equal to one sixth of the curvature -- is special for two reasons: (i) it exhibits an enhanced local symmetry; (ii) it emerges as a part of the model that gives rise to the self-accelerated Universe. The known problems of this theory are: either it cannot be coupled to a non-conformal conserved stress-tensor because of the enhanced symmetry, or it propagates a ghost-like state when the symmetry is constrained by the Lagrange multiplier method. Here we propose a solution to these problems in the linearized approximation.

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