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arXiv · hep-th/0206042

Effective Lagrangians and Universality Classes of Nonlinear Bigravity

Thibault Damour·Ian I. Kogan
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Abstract

We discuss the fully non-linear formulation of multigravity. The concept of universality classes of effective Lagrangians describing bigravity, which is the simplest form of multigravity, is introduced. We show that non-linear multigravity theories can naturally arise in several different physical contexts: brane configurations, certain Kaluza-Klein reductions and some non-commutative geometry models. The formal and phenomenological aspects of multigravity (including the problems linked to the linearized theory of massive gravitons) are briefly discussed.

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Thibault Damour, Ian I. Kogan. 2002-10-23. Effective Lagrangians and Universality Classes of Nonlinear Bigravity. https://doi.org/10.1103/physrevd.66.104024

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