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Reconstruction of extended inflationary potentials for attractors

  • Qing Gao
  • Yungui Gong
Regular Article
  • 19 Downloads

Abstract.

We give the procedure to reconstruct the extended inflationary potentials for attractors and use the \( \alpha\) 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 \( \xi\) 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 .

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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Physical Science and TechnologySouthwest UniversityChongqingChina
  2. 2.School of PhysicsHuazhong University of Science and TechnologyHubeiChina

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