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A Dynamical Approach to the Cosmological Constant
Shinji Mukohyama, Lisa Randall
We consider a dynamical approach to the cosmological constant. There is a scalar field with a potential whose minimum occurs at a generic, but negative, value for the vacuum energy…
Pseudonatural Inflation
Nima Arkani-Hamed, Hsin-Chia Cheng, Paolo Creminelli +1
We study how to obtain a sufficiently flat inflaton potential that is natural from the particle physics point of view. Supersymmetry, which is broken during inflation, cannot prote…
Extranatural Inflation
Nima Arkani-Hamed, Hsin-Chia Cheng, Paolo Creminelli +1
We present a new model of inflation in which the inflaton is the extra component of a gauge field in a 5d theory compactified on a circle. The chief merit of this model is that the…