Quantum M^2 -> 2Lambda/3 discontinuity for massive gravity with a Lambda term

Details Quantum M^2 -> 2Lambda/3 discontinuity for massive gravity with a Lambda term Quantum M^2 -> 2Lambda/3 discontinuity for massive gravity with a Lambda term

2001-05-01

arxiv.org/abs/hep-th/0105008v1

Phys.Lett. B516 (2001) 156-160

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, REVTeX

Scientific paper

10.1016/S0370-2693(01)00909-1

In a previous paper we showed that the absence of the van Dam-Veltman-Zakharov discontinuity as M^2 -> 0 for massive spin-2 with a Lambda term is an artifact of the tree approximation, and that the discontinuity reappears at one loop, as a result of going from five degrees of freedom to two. In this paper we show that a similar classical continuity but quantum discontinuity arises in the "partially massless" limit M^2 -> 2Lambda/3, as a result of going from five degrees of freedom to four.

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