Constraints on quasidilaton massive gravity

Katarina Martinovic*, Mairi Sakellariadou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The last decade has seen great advancements in the field of modified gravity, motivated by the dark energy problem, or by the search for a fundamental quantum gravity theory. With a phenomenologically driven analysis, we consider de Rham, Gabadadze and Tolley theory and its extension, quasidilaton massive gravity (QDMG). When looking for ways to constrain the theory, a promising direction appeared to be astrophysical tests. The scalar gravitational degree of freedom and quasidilaton degree of freedom alter the evolution of Bardeen potentials, which in turn affects the galaxy rotation curves. We find an upper bound on graviton mass in QDMG to be m≤10-31 eV. This result agrees with bounds from LIGO and numerous Solar System tests. However, the extremely small mass of the graviton remains a detection out of reach, with LISA's sensitivity exploring the parameter space up to m≤10-25 eV.

Original languageEnglish
Article number124016
JournalPhysical Review D
Volume100
Issue number12
Early online date5 Dec 2019
DOIs
Publication statusPublished - 15 Dec 2019

Fingerprint

Dive into the research topics of 'Constraints on quasidilaton massive gravity'. Together they form a unique fingerprint.

Cite this