%0 Journal Article %T Spiral inflation %A Barenboim, G. %A Park, W. I. %J Physics Letters B %D 2015 %V 741 %I Elsevier Science Bv %@ 0370-2693 %G English %F Barenboim+Park2015 %O WOS:000348290800039 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2109), last updated on Mon, 09 Mar 2015 17:05:29 +0000 %X We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral motion starting from around the top of a symmetry breaking potential. We show that, even though inflation takes place for a field value much smaller than Planck scale, it is possible to obtain relatively large tensor-to-scalar ratio (r similar to 0.1) without fine tuning. The inflationary observables perfectly match Planck data. %R 10.1016/j.physletb.2014.12.042 %U http://arxiv.org/abs/1412.2724 %U https://doi.org/10.1016/j.physletb.2014.12.042 %P 252-255