2014/01/21 by Gregory Gabadadze, Rampei Kimura, David Pirtskhalava
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Classical mechanics #Cosmology and Gravitation Theories #Curvature #Curved space #Decoupling (probability) #Gamma-ray bursts and supernovae #General relativity #Geometry #Gravitation #Graviton #Massive gravity #Mathematical physics #Mathematics #Minkowski space #Physics #Quantum mechanics #Superluminal motion #astro-ph.CO #hep-th
paper · pdf · doi:10.1103/physrevd.90.024029
published as Phys. Rev. D 90, 024029 (2014) · 4 pages, 1 figure
arxiv created 2014/01/21 · openalex publication_date 2014/07/10 · arxiv updated 2014/07/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Quasidilaton massive gravity is an extension of massive general relativity to a theory with additional scale invariance and approximate internal Galilean symmetry. The theory has a novel self-accelerated solution with the metric indistinguishable (in the decoupling limit) from the de Sitter space, its curvature set by the graviton mass. The spectra of tensor, vector, and scalar perturbations on this solution contain neither ghosts nor gradient instabilities or superluminal modes, for a range of the parameter space. This represents an example of a self-accelerated solution with viable perturbations, attainable within a low-energy effective field theory.