Entropy Production in Affine Inflation

Understand

Multiple scalar fields nonminimally interacting through pure affine gravity are considered to generate primordial perturbations during an inflationary phase.

• The couplings considered give rise to two distinct sources of entropy perturbations that may not be suppressed in the long wavelength limit.
• The first is merely induced by the presence of more than one scalar and arises even in the minimal coupling limit.
• The second source however is restricted to nonminimal interaction.