“School of Particles”

Back to Papers Home
Back to Papers of School of Particles

Paper   IPM / Particles / 13660
School of Particles and Accelerator
  Title:   R2logR quantum corrections and the inflationary observables
  Author(s): 
1.  Ido Ben-Dayan
2.  Shenglin Jing
3.  Mahdi Torabian
4.  Alexander Westphal
5.  Lucila Zarate
  Status:   Submitted
  Journal:
  Year:  2014
  Supported by:  IPM
  Abstract:
We study a model of inflation with terms quadratic and logarithmic in the Ricci scalar, where the gravitational action is f(R)=R+aR2+bR2lnR. These terms are expected to arise from one loop corrections involving matter fields in curved space-time. The spectral index ns and the tensor to scalar ratio yield 10-4<r<0.03 and 0.94<ns<0.99. i.e. r is an order of magnitude bigger or smaller than the original Starobinsky model which predicted r=10-3. Further enhancement of r gives a scale invariant ns=1 or higher. Other inflationary observables are dns/dlnk>-5.2*10-4,u<2.1*10-8,y<2.6*10-9. Despite the enhancement in r, if the recent BICEP2 measurement stands, this model is disfavoured.

Download TeX format
back to top
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
scroll left or right