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Einstein Gravity, Massive Gravity, Multi-Gravity and Nonlinear Realizations
Garrett Goon, Kurt Hinterbichler, Austin Joyce +1
The existence of a ghost free theory of massive gravity begs for an interpretation as a Higgs phase of General Relativity. We revisit the study of massive gravity as a Higgs phase.…
Holography for a Non-Inflationary Early Universe
Kurt Hinterbichler, James Stokes, Mark Trodden
We construct a gravitational dual of the pseudo-conformal universe, a proposed alternative to inflation in which a conformal field theory in nearly flat space develops a time depen…
Beyond the Cosmological Standard Model
Austin Joyce, Bhuvnesh Jain, Justin Khoury +1
After a decade and a half of research motivated by the accelerating universe, theory and experiment have a reached a certain level of maturity. The development of theoretical model…
Spontaneously Broken Gauge Theories and the Coset Construction
Garrett Goon, Austin Joyce, Mark Trodden
The methods of non-linear realizations have proven to be powerful in studying the low energy physics resulting from spontaneously broken internal and spacetime symmetries. In this…
Galileons Coupled to Massive Gravity: General Analysis and Cosmological Solutions
Garrett Goon, A. Emir Gumrukcuoglu, Kurt Hinterbichler +2
We further develop the framework for coupling galileons and Dirac-Born-Infeld (DBI) scalar fields to a massive graviton while retaining both the non-linear symmetries of the scalar…