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N-flation from multiple DBI type actions
2009
Physics Letters B
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In this letter we present a new N-flation model constructed by making use of multiple scalar fields which are being described by their own DBI action. We show that the dependence of the e-folding number and of the curvature perturbation on the number of fields changes compared with the normal N-flation model. Our model is also quite different from the usual DBI N-flation which is still based on one DBI action but involves many moduli components. Some specific examples of our model have been analyzed.
doi:10.1016/j.physletb.2009.09.043
fatcat:v5zpmwgcwjdcjn3bieztybnasa