68 citations · 162 across the 4 of their papers we have counts for
5 papers
Cosmological perturbations of massive gravity coupled to DBI Galileons
Melinda Andrews, Kurt Hinterbichler, James Stokes +1
Certain scalar fields with higher derivative interactions and novel classical and quantum mechanical properties - the Galileons - can be naturally covariantized by coupling to nonl…
Galileon forces in the Solar System
Melinda Andrews, Yi-Zen Chu, Mark Trodden
We consider the challenging problem of obtaining an analytic understanding of realistic astrophysical dynamics in the presence of a Vainshtein screened fifth force arising from inf…
Massive gravity coupled to DBI Galileons is ghost free
Melinda Andrews, Garrett Goon, Kurt Hinterbichler +2
It is possible to couple Dirac-Born-Infeld (DBI) scalars possessing generalized Galilean internal shift symmetries (Galileons) to nonlinear massive gravity in four dimensions, in s…
Instabilities of Spherical Solutions with Multiple Galileons and SO(N) Symmetry
Melinda Andrews, Kurt Hinterbichler, Justin Khoury +1
The 4-dimensional effective theory arising from an induced gravity action for a co-dimension greater than one brane consists of multiple galileon fields pi^I, I=1...N, invariant un…
Doppelganger defects
Melinda Andrews, Matt Lewandowski, Mark Trodden +1
We study k-defects - topological defects in theories with more than two derivatives and second-order equations of motion - and describe some striking ways in which these defects bo…