Inflationary Adler conditions
Daniel Green, Yiwen Huang, Chia-Hsien Shen
Abstract
The authors study the Effective Field Theory (EFT) of Inflation in the sub-horizon limit, where space-time becomes flat but Lorentz boosts are still broken. They consider the Goldstone bosons associated with the spontaneous breaking of Lorentz boosts, and derive a soft theorem for scattering amplitudes. As an application, the authors show that the Dirac-Born-Infeld Inflation is the unique theory that has an emergent Lorentz invariance when the boosts are spontaneously broken.
Topics & Concepts
Inflation (cosmology)PhysicsLorentz covarianceLorentz transformationGoldstone bosonLimit (mathematics)Dirac (video compression format)BosonTheoretical physicsField theory (psychology)Scattering amplitudeEffective field theoryMathematical physicsAmplitudeQuantum electrodynamicsClassical mechanicsQuantum mechanicsMathematicsMathematical analysisNeutrinoCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsNoncommutative and Quantum Gravity Theories