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Published December 19, 2016 | Submitted
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Superluminal Propagation and Acausality of Nonlinear Massive Gravity

Abstract

Massive gravity is an old idea: trading geometry for mass. Much effort has been expended on establishing a healthy model, culminating in the current ghost-free version. We summarize here our recent findings -- that it is still untenable -- because it is locally acausal: CTC solutions can be constructed in a small neighborhood of any event.

Additional Information

We thank M. Porrati for requesting a CTC clarification, and W. Siegel for a SUSY query. S. Deser was supported in part by NSF PHY-1266107 and DOE DE-FG02-164 92ER40701 grants. K. Izumi is supported by Taiwan National Science Council under Project No. NSC101-2811-M-002-103. Y. C. Ong was supported by the Taiwan Scholarship from Taiwan's Ministry of Education.

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Created:
August 19, 2023
Modified:
October 23, 2023