Inflation with non-canonical scalar fields revisited
  We revisit inflation with non-canonical scalar fields by applying
deformed-steepness exponential potentials. We show that the resulting scenario
can lead to inflationary observables, and in particular to scalar spectral
index and tensor-to-scalar ratio, in remarkable agreement with observations.
Additionally, a significant advantage of the scenario is that the required
parameter values, such as the non-canonicality exponent and scale, as well as
the potential exponent and scale, do not need to acquire unnatural values and
hence can accept a theoretical justification. Hence, we obtain a significant
improvement with respect to alternative schemes, and we present distinct
correlations between the model parameters that better fit the data, which can
be tested in future probes. This combination of observational efficiency and
theoretical justification makes the scenario at hand a good candidate for the
description of inflation.
