Dark matter via massive bigravity

2015/04/30 by Luc Blanchet, Lavinia Heisenberg · 4 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Cold dark matter #Context (archaeology) #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Degrees of freedom (physics and chemistry) #General relativity #Metric (unit) #Newtonian dynamics #Phenomenology (philosophy) #Physics #Quantum mechanics #Scalar field dark matter #Theoretical physics #astro-ph.CO #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.91.103518

7 pages, references added, typos corrected, journal version

arxiv created 2015/05/06 · openalex publication_date 2015/05/19 · arxiv updated 2015/06/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In this work we investigate the existence of relativistic models for dark matter in the context of bimetric gravity, used here to reproduce the modified Newtonian dynamics (MOND) at galactic scales. For this purpose we consider two different species of dark matter particles that separately couple to the two metrics of bigravity. These two sectors are linked together via an internal U(1) vector field, and some effective composite metric built out of the two metrics. Among possible models only certain classes of kinetic and interaction terms are allowed without invoking ghost degrees of freedom. Along these lines we explore the number of allowed kinetic terms in the theory and point out the presence of ghosts in a previous model. Finally, we propose a promising class of ghost-free candidate theories that could provide the MOND phenomenology at galactic scales while reproducing the standard cold dark matter model at cosmological scales.

Citations

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Cited by

• Dark Matter Superfluidity
• Dipolar dark matter as an effective field theory
• Cosmology in doubly coupled massive gravity: Constraints from SNIa, BAO and CMB
• Baryon-Interacting Dark Matter: heating dark matter and the emergence of galaxy scaling relations