Two gravitationally Chern-Simons terms are too many

Aragone, C.; Arias, Pio J.; Khoudeir, A.

Two gravitationally Chern-Simons terms are too many

Authors

Aragone, C.

Arias, Pio J.

Khoudeir, A.

Description

It is shown that topological massive gravity augmented by the triadic gravitational Chern-Simons first order term is a curved a pure spin-2 action. This model contains two massive spin-2 excitations. However, since its light-front energy is not semidefinite positive, this double CS-action does not have any physical relevance.In other words, topological massive gravity cannot be spontaneously broken down by the presence of the triadic CS term.
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