Electromagnetic coupling effects in natural inflation

14 Jul 2019  ·  Cho Hing-Tong, Ng Kin-Wang ·

In this work we study the effects of the electromagnetic coupling in natural inflation in a systematic manner using the Schwinger-Keldysh formalism. The corresponding influence functional is evaluated to one-loop level... It can be interpreted as due to a single stochastic force. The equation of motion of the inflaton field is therefore given in the form of a Langevin equation. Lastly, the two-point and the three-point correlation functions of the inflaton field are worked out. They are related to the power spectrum and the nongaussianity of the inflaton field, respectively. read more

PDF Abstract
No code implementations yet. Submit your code now


General Relativity and Quantum Cosmology High Energy Physics - Theory