48 citations · 111 across the 4 of their papers we have counts for
4 papers
Observational constraints on tachyon and DBI inflation
Sheng Li, Andrew R Liddle
We present a systematic method for evaluation of perturbation observables in non-canonical single-field inflation models within the slow-roll approximation, which allied with field…
Observational constraints on K-inflation models
Sheng Li, Andrew R. Liddle
We extend the ModeCode software of Mortonson, Peiris and Easther to enable numerical computation of perturbations in K-inflation models, where the scalar field no longer has a cano…
Inhomogeneous Reheating Scenario with DBI fields
Sheng Li
We discuss a new mechanism which can be responsible for the origin of the primordial perturbation in inflationary models, the inhomogeneous DBI reheating scenario. Light DBI fields…
DBI-Curvaton
Sheng Li, Yi-Fu Cai, Yun-Song Piao
In this paper, we study a curvaton model described by a Dirac-Born-Infeld-like action. We calculate the spectrum of curvature perturbation induced by DBI-curvaton and estimate its…