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hep-th2010★ 137 cited
Galilean symmetry in the effective theory of inflation: new shapes of non-Gaussianity
Paolo Creminelli, Guido D'Amico, Marcello Musso +2
We study the consequences of imposing an approximate Galilean symmetry on the Effective Theory of Inflation, the theory of small perturbations around the inflationary background. T…
hep-th2010★ 325 cited
Galilean Genesis: an alternative to inflation
Paolo Creminelli, Alberto Nicolis, Enrico Trincherini
We propose a novel cosmological scenario, in which standard inflation is replaced by an expanding phase with a drastic violation of the Null Energy Condition (NEC): \dot H >> H^2.…