Reconstruction of scalar field theories realizing inflation consistent with the Planck and BICEP2 results

Abstract

We reconstruct scalar field theories to realize inflation compatible with the BICEP2 result as well as the Planck. In particular, we examine the chaotic inflation model, natural (or axion) inflation model, and an inflationary model with a hyperbolic inflaton potential. We perform an explicit approach to find out a scalar field model of inflation in which any observations can be explained in principle.

arXiv comment7 pages, no figure, version accepted for publication in Physics Letters B

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