The rapid-turn inflationary attractor. (arXiv:1902.10529v1 [hep-th])
<a href="http://arxiv.org/find/hep-th/1/au:+Bjorkmo_T/0/1/0/all/0/1">Theodor Bjorkmo</a>
We prove the existence of a general class of rapidly turning two-field
inflationary attractors. By requiring a large, slowly varying turn rate and the
existence of a conserved adiabatic mode, we solve the system completely without
specifying any metric or potential, and prove the linear stability of the
solution. Several recently studied turning inflation models, including
hyperinflation, side-tracked inflation, and a flat field-space model, turn out
to be examples of this general class of attractor solutions. Very rapidly
turning models are of particular interest since they can be compatible with the
swampland conjectures, and we show that the solutions further simplify in this
limit.
We prove the existence of a general class of rapidly turning two-field
inflationary attractors. By requiring a large, slowly varying turn rate and the
existence of a conserved adiabatic mode, we solve the system completely without
specifying any metric or potential, and prove the linear stability of the
solution. Several recently studied turning inflation models, including
hyperinflation, side-tracked inflation, and a flat field-space model, turn out
to be examples of this general class of attractor solutions. Very rapidly
turning models are of particular interest since they can be compatible with the
swampland conjectures, and we show that the solutions further simplify in this
limit.
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