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arXiv · 1408.5131

The coupling to matter in Massive, Bi- and Multi-Gravity

Johannes Noller·Scott Melville
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Abstract

In this paper we construct a family of ways in which matter can couple to one or more `metrics'/spin-2 fields in the vielbein formulation. We do so subject to requiring the weak equivalence principle and the absence of ghosts from pure spin-2 interactions generated by the matter action. Results are presented for Massive, Bi- and Multi-Gravity theories and we give explicit expressions for the effective matter metric in all of these cases.

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Johannes Noller, Scott Melville. 2015-01-20. The coupling to matter in Massive, Bi- and Multi-Gravity. https://doi.org/10.1088/1475-7516%2F2015%2F01%2F003

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