Emission of primordial bosonic radiation during inflation

Abstract

We study the emission of neutral massless (1, 2)h-spin bosons during power-law inflation using unified spinor field theory. We show that during inflation, gravitons and photons were emitted with wavelengths (on physical coordinates) that increase with the Hubble radius λ Ph ∼ a/H. The quantised action related to these bosons is calculated and determined to be a fraction of the Planck constant.