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astro-ph2005
Running Non-Gaussianities in DBI Inflation
Xingang Chen
We study the non-Gaussianity in the simplest infrared (IR) model of the DBI inflation. We show that the non-Gaussianity in such a model is compatible with the current observational…
hep-th2005
Inflation from Warped Space
Xingang Chen
A long period of inflation can be triggered when the inflaton is held up on the top of a steep potential by the infrared end of a warped space. We first study the field theory desc…