Description
Accurate predictions of correlators of the primordial curvature perturbation are
critical for connecting inflationary models to cosmological observations. Numer-
ical methods employing differential equations, such as the transport approach,
have been extensively used to compute the evolution of these correlators. In this
talk, I will present a novel numerical implementation of the transport formalism.
We use Multi-point propagators (MPPs), that link non-linearly evolved fields
to their values at some earlier time. This method recasts the direct evolution
of correlators into a system of differential equations for MPPs. We benchmark
the MPP approach against the established PyTransport code across a range
of models, and I will discuss the essential applications of the new method to
models than can lead to enhanced fluctuations on small scales.
