79 citations · 247 across the 6 of their papers we have counts for
5 papers · 1 filter
On the Origin of Gravitational Lorentz Covariance
Justin Khoury, Godfrey E. J. Miller, Andrew J. Tolley
We provide evidence that general relativity is the unique spatially covariant effective field theory of the transverse, traceless graviton degrees of freedom. The Lorentz covarianc…
DBI Genesis: An Improved Violation of the Null Energy Condition
Kurt Hinterbichler, Austin Joyce, Justin Khoury +1
We show that the DBI conformal galileons, derived from the world-volume theory of a 3-brane moving in an AdS bulk, admit a background, stable under quantum corrections, which viola…
DBI Realizations of the Pseudo-Conformal Universe and Galilean Genesis Scenarios
Kurt Hinterbichler, Austin Joyce, Justin Khoury +1
The pseudo-conformal universe is an alternative to inflation in which the early universe is described by a conformal field theory on approximately flat space-time. The fields devel…
Spatially Covariant Theories of a Transverse, Traceless Graviton, Part I: Formalism
Justin Khoury, Godfrey E. J. Miller, Andrew J. Tolley
General relativity is a covariant theory of two transverse, traceless graviton degrees of freedom. According to a theorem of Hojman, Kuchar, and Teitelboim, modifications of genera…
Towards a Cosmological Dual to Inflation
Justin Khoury, Godfrey E. J. Miller
We derive all single-field cosmologies with unit sound speed that generate scale invariant curvature perturbations on a dynamical attractor background. We identify three distinct p…