Cosmological α-attractors stand out as particularly compelling models to describe inflation in
the very early universe, naturally meeting tight observational bounds from cosmic microwave …

Recently multi-field inflation models that can produce large scalar fluctuations on small
scales have drawn a lot of attention, primarily because they could lead to primordial black …

Stochastic inflation is an effective theory describing the super-Hubble, coarse-grained,
scalar fields driving inflation, by a set of Langevin equations. We previously highlighted the …

A bstract Recent studies of inflation with multiple scalar fields have highlighted the
importance of non-canonical kinetic terms in novel types of inflationary solutions. This …

Multi-field inflation with a curved scalar geometry has been found to support background
trajectories that violate the slow-roll, slow-turn conditions and thus have the potential to …

Several recent proposals to embed inflation into high-energy physics rely on inflationary
dynamics characterized by a strongly nongeodesic motion in negatively curved field space …

We prove the existence of a general class of rapidly turning two-field inflationary attractors.
By only requiring a large, slowly varying turn rate, we solve the system completely without …

Massive fields during inflation provide an interesting opportunity to test new physics at very
high energy scales. Meanwhile in fundamental realizations, the inflationary field space …

Recent years have seen the introduction of various multi-field inflationary scenarios in which
the curvature and geodesics of the scalar manifold play a crucial role. We outline a simple …

Inflation can be supported in very steep potentials if it is generated by rapidly turning fields,
which can be natural in negatively curved field spaces. The curvature perturbation, ζ, of …