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arXiv · 2202.01154

Softly higher-derivative massive gravity

C. A. S. Almeida·W. T. Cruz·R. V. Maluf·A. Yu. Petrov·P. J. Porfirio
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Abstract

In this work, we study the higher-derivative massive gravity in $D$-dimensional space-time with the mass term arisen due to a 2-brane embedded in a $4D$ Minkowski spacetime. We consider the effect of a resonance mass term from the DGP braneworld model for the higher-derivative massive gravity. Moreover, we add the gravitational Chern-Simons and Ricci-Cotton terms to this model and evaluate the graviton propagator using a basis of Barnes-Rivers spin projectors. Using the obtained propagator, we proceed with discussing the consistency of the model, writing the dispersion relations, and analyzing causality and unitarity.

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C. A. S. Almeida, W. T. Cruz, R. V. Maluf, A. Yu. Petrov, P. J. Porfirio. 2022-02-02. Softly higher-derivative massive gravity. https://doi.org/10.1140/epjc/s10052-022-10681-7

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