  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 non-Gaussianity. We find
that in the limit of low sound speed the amplitude of curvature perturbation is
enhanced more than that in DBI inflation. This result also means that the
inflationary scale with DBI-curvaton may be lower than that in usual curvaton
model. In addition, we also find that the local non-Gaussianity level in
DBI-curvaton is generally about 10 times larger than that in usual curvaton
model, which is interesting for current observations. This work in some sense
explores a new application of brane-cosmology in inflation.
