Attractors, Bifurcations and Curvature in Multi-field Inflation [CL]

http://arxiv.org/abs/1903.03513


Recent years have seen the introduction of various multi-field inflationary scenarios, in which the scalar curvature can play a crucial role. We outline a simple description that unifies these different proposals. We demonstrate how the underlying dynamics is governed by critical points and bifurcations that determine the late-time behaviour of the system. This unifies the late-time attractors of hyperinflation, angular, orbital and side-tracked inflation. Interestingly, the case of hyperinflation is shown to be a special case of side-tracked inflation. This equivalence relies on the enhanced isometries of the hyperbolic manifold and we provide the explicit coordinate transformations that map the two models into each other.

Read this paper on arXiv…

P. Christodoulidis, D. Roest and E. Sfakianakis
Thu, 14 Mar 19
37/96

Comments: 6 pages, 3 figures