Stability of massive cosmological gravitons

DOI10.1016/S0370-2693(01)00523-8zbMATH Open0977.83021arXivhep-th/0103255OpenAlexW3102666061MaRDI QIDQ5936638

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Publication date: 2 July 2001

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Abstract: We analyze the physics of massive spin 2 fields in (A)dS backgrounds and exhibit that: The theory is stable only for masses m^2 >= 2Lambda/3, where the conserved energy associated with the background timelike Killing vector is positive, while the instability for m^2<2Lambda/3 is traceable to the helicity 0 energy. The stable, unitary, partially massless theory at m^2=2Lambda/3 describes 4 propagating degrees of freedom, corresponding to helicities (+/-2,+/-1) but contains no 0 helicity excitation.

Full work available at URL: https://arxiv.org/abs/hep-th/0103255

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