# Primordial statistical anisotropy generated at the end of inflation

@article{Yokoyama2008PrimordialSA, title={Primordial statistical anisotropy generated at the end of inflation}, author={Shuichiro Yokoyama and J. Soda}, journal={Journal of Cosmology and Astroparticle Physics}, year={2008}, volume={2008}, pages={005} }

We present a new mechanism for generating primordial statistical anisotropy of curvature perturbations. We introduce a vector field which has a non-minimal kinetic term and couples with a waterfall field in a hybrid inflation model. In such a system, the vector field gives fluctuations of the end of inflation and hence induces a subcomponent of curvature perturbations. Since the vector has a preferred direction, the statistical anisotropy could appear in the fluctuations. We present the…

## 152 Citations

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