Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities

Understand

We investigate thermal inflation in double-screen entropic cosmology.

• We find that its realization is general, resulting from the system evolution from non-equilibrium to equilibrium.
• Furthermore, going beyond the background evolution, we study the primordial curvature perturbations arising from the universe interior, as well as from the thermal fluctuations generated on the holographic screens.
• We show that the power spectrum is nearly scale-invariant with a red tilt, while the tensor-to-scalar ratio is in agreement with observations.