Computing observables in curved multifield models of inflation - A guide
  (with code) to the transport method
  We describe how to apply the transport method to compute inflationary
observables in a broad range of multiple-field models. The method is efficient
and encompasses scenarios with curved field-space metrics, violations of
slow-roll conditions and turns of the trajectory in field space. It can be used
for an arbitrary mass spectrum, including massive modes and models with
quasi-single-field dynamics. In this note we focus on practical issues. It is
accompanied by a Mathematica code which can be used to explore suitable models,
or as a basis for further development.
