Abstract
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.
| Original language | English |
|---|---|
| Article number | 024029 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 90 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2014 Jul 10 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Self-acceleration with quasidilaton. / Gabadadze, Gregory; Kimura, Rampei; Pirtskhalava, David.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 90, No. 2, 024029, 10.07.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Self-acceleration with quasidilaton
AU - Gabadadze, Gregory
AU - Kimura, Rampei
AU - Pirtskhalava, David
PY - 2014/7/10
Y1 - 2014/7/10
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=84904283511&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.90.024029
DO - 10.1103/PhysRevD.90.024029
M3 - Article
VL - 90
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 0556-2821
IS - 2
M1 - 024029
ER -