%0 Journal Article %T Generation of perturbation after multi-field inflation %A Gong %A Jinn-Ouk %J High Energy Physics - Phenomenology %D 2007 %I %R 10.1016/j.physletb.2007.10.024 %X We explore a new possibility that some inflaton fields in multi-field inflation models satisfy the observed value of the spectral index so that the curvature perturbation generated by them through post-inflationary dynamics may be relevant for the current observations. We illustrate this point using a simple and reasonable multi-field chaotic inflation model motivated from string theory. Possible non-Gaussianity and the tensor-to-scalar ratio are briefly addressed. %U http://arxiv.org/abs/0706.3599