https://doi.org/10.1140/epjc/s10052-022-10681-7
Regular Article - Theoretical Physics
Softly higher-derivative massive gravity
1
Departamento de Física Campus do Pici, Universidade Federal do Ceará (UFC), C.P. 6030, 60455-760, Fortaleza, CE, Brazil
2
Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE), Campus Juazeiro do Norte, 63040-000, Juazeiro do Norte, CE, Brazil
3
Departamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, 58051-970, João Pessoa, PB, Brazil
Received:
4
March
2022
Accepted:
6
August
2022
Published online:
17
August
2022
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.
© The Author(s) 2022
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