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Advances in High Energy Physics
Volume 2017, Article ID 6759267, 16 pages
Research Article

Starobinsky Inflation: From Non-SUSY to SUGRA Realizations

Department of Physics, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus

Correspondence should be addressed to Constantinos Pallis; rg.htua.neg@sillapk

Received 29 December 2016; Revised 23 March 2017; Accepted 10 April 2017; Published 18 June 2017

Academic Editor: Elias C. Vagenas

Copyright © 2017 Constantinos Pallis and Nicolaos Toumbas. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


We review the realization of Starobinsky-type inflation within induced-gravity supersymmetric (SUSY) and non-SUSY models. In both cases, inflation is in agreement with the current data and can be attained for sub-Planckian values of the inflation. The corresponding effective theories retain perturbative unitarity up to the Planck scale and the inflation mass is predicted to be . The supergravity embedding of these models is achieved by employing two gauge singlet chiral superfields, a superpotential that is uniquely determined by a continuous and a discrete symmetry and several (semi)logarithmic Kähler potentials that respect these symmetries. Checking various functional forms for the noninflation accompanying field in the Kähler potentials, we identify four cases which stabilize it without invoking higher order terms.