Feasibility of one loop inflation in the light of CMB

Abstract

The one loop inflation stemming from the superstring theory and associated Yukawa coupling arising from supersymmetric interactions is examined with CMB. The Yukawa coupling can exist beyond standard model particle physics sector. The tensor to scalar ratio of the loop inflation is found consistent with the recent CMB results for the Yukawa coupling from cosmology. The newly derived constraint on the Yukawa coupling constant may play a crucial role in validating inflationary model originating from supersymmetry and may shed some light on the formation of dark matter or dark energy. The outcomes of the study may be helpful in the phenomenological realisation of string theory.