Journal article
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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Bibliographic Details
- Journal:
- JHEP
- Volume:
- 12
- Pages:
- 160
- Publication date:
- 2014-10-28
- DOI:
- Source identifiers:
-
488529
Item Description
Terms of use
- Copyright date:
- 2014
- Notes:
-
25 pages; v2: corrected an error in section 5.3.1 which changes
slightly the conclusions of that subsection; expanded section 6.1 to include
derivation of the scaling of the cutoff; version published in JHEP
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