2013

A non-local theory of massive gravity

Jaccard, Maud, Maggiore, Michele, Mitsou, Ermis

Understand

We construct a fully covariant theory of massive gravity which does not require the introduction of an external reference metric, and overcomes the usual problems of massive gravity theories (fatal ghosts instabilities, acausality and/or vDVZ discontinuity).

  • The equations of motion of the theory are non-local, but respect causality.
  • The starting point is the quadratic action proposed in the context of the degravitation idea.
  • We show that it is possible to extended it to a fully non-linear covariant theory.

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