2017/01/26 by Luc Blanchet, Lavinia Heisenberg · 14 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Context (archaeology) #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Decoupling (probability) #Effective field theory #Epistemology #Particle physics #Phenomenology (philosophy) #Philosophy #Physics #Theoretical physics #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.96.083512
published in Physical review. D/Physical review. D. 96(8) (American Physical Society) · 8 pages, 1 figure
arxiv created 2017/01/26 · openalex publication_date 2017/10/16 · arxiv updated 2017/10/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Dipolar dark matter is an alternative model motivated by the challenges faced by the standard cold dark matter model to describe the right phenomenology at galactic scales. A promising realization of dipolar dark matter was recently proposed in the context of massive bigravity theory. The model contains dark matter particles as well as a vector field coupled to the effective composite metric of bigravity. This model is completely safe in the gravitational sector thanks to the underlying properties of massive bigravity. In this work, we investigate the exact decoupling limit of the theory, including the contribution of the matter sector, and prove that it is free of ghosts in this limit. We conclude that the theory is acceptable as an effective field theory below the strong coupling scale.