Cycles of interactions in multi-gravity theories
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, howe...
| Main Authors: | , , |
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| 格式: | Journal article |
| 出版: |
2014
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