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Dealing with ghost-free massive gravity without explicit square roots of matrices

In this paper we entertain a simple idea that the action of ghost free massive gravity (in metric formulation) depends not on the full structure of the square root of a matrix but rather on its invariants given by the elementary symmetric polynomials of the eigenvalues. In particular, we show how on...

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Main Authors: Alexey Golovnev, Fedor Smirnov
Formato: Artigo
Idioma:Inglês
Publicado: Elsevier 2017-07-01
Series:Physics Letters B
Acceso en liña:http://www.sciencedirect.com/science/article/pii/S0370269317303325
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