https://doi.org/10.1140/epjp/i2018-12324-3
Regular Article
Reconstruction of extended inflationary potentials for attractors
1
School of Physical Science and Technology, Southwest University, 400715, Chongqing, China
2
School of Physics, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
* e-mail: yggong@hust.edu.cn
Received:
27
April
2018
Accepted:
16
October
2018
Published online:
30
November
2018
We give the procedure to reconstruct the extended inflationary potentials for attractors and use the 
attractor and the constant-roll model as examples to show how to reconstruct the class of extended inflationary potentials in the strong-coupling limit. We also derive the strong-coupling condition which the coupling constant 
satisfies. The class of extended inflationary potentials has the same attractor, and the reconstructed extended inflationary potentials are consistent with the observational constraints. The existence of the attractors from extended inflationary models further challenges the model discrimination just by the observables ns and r .
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2018
