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Cycles of interactions in multi-gravity theories

Abstract:

In this paper we study multi-gravity (multi-metric and multi-vielbein) theories in the presence of cycles of interactions (cycles in the so-called `theory graph'). It has been conjectured that in multi-metric theories such cycles lead to the introduction of a ghost-like instability, which, however, is absent in the multi-vielbein version of such theories. In this paper we answer this question in the affirmative by explicitly demonstrating the presence of the ghost in such multi-metric theorie...

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Publisher copy:
10.1007/JHEP12(2014)160

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Journal:
JHEP
Volume:
12
Pages:
160
Publication date:
2014-10-28
DOI:
URN:
uuid:c7070f62-735d-4f23-a791-b5ff66c076a8
Source identifiers:
488529
Local pid:
pubs:488529
Keywords:

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