In this Letter, we study a curvaton model described by a Dirac-Born-Infeld-like action. We calculate thespectrum of curvature perturbation induced by DBI-curvaton and estimate its non-Gaussianity. We findthat in the limit of low sound speed the amplitude of curvature perturbation is enhanced more thanthat in DBI inflation. This result also means that the inflationary scale with DBI-curvaton may be lowerthan that in usual curvaton model. In addition, we also find that under same conditions 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 ofbrane-cosmology in inflation.
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