TY - JOUR AU - Barenboim, G. AU - Park, W. I. PY - 2015 DA - 2015// TI - Spiral inflation T2 - Phys. Lett. B JO - Physics Letters B SP - 252 EP - 255 VL - 741 PB - Elsevier Science Bv AB - 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. SN - 0370-2693 UR - http://arxiv.org/abs/1412.2724 UR - https://doi.org/10.1016/j.physletb.2014.12.042 DO - 10.1016/j.physletb.2014.12.042 LA - English N1 - WOS:000348290800039 ID - Barenboim+Park2015 ER -