Loop corrections to primordial non-Gaussianity


Boran S., Kahya E. O.

PHYSICAL REVIEW D, cilt.97, sa.4, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 97 Konu: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1103/physrevd.97.043507
  • Dergi Adı: PHYSICAL REVIEW D

Özet

We discuss quantum gravitational loop effects to observable quantities such as curvature power spectrum and primordial non-Gaussianity of cosmic microwave background (CMB) radiation. We first review the previously shown case where one gets a time dependence for zeta-zeta correlator due to loop corrections. Then we investigate the effect of loop corrections to primordial non-Gaussianity of CMB. We conclude that, even with a single scalar inflaton, one might get a huge value for non-Gaussianity which would exceed the observed value by at least 30 orders of magnitude. Finally we discuss the consequences of this result for scalar driven inflationary models.