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@ARTICLE{Broy:208578,
      author       = {Broy, Benedict and Pedro, Francisco G. and Westphal,
                      Alexander},
      title        = {{D}isentangling the f ({R})-{D}uality},
      journal      = {Journal of cosmology and astroparticle physics},
      volume       = {2015},
      number       = {03},
      issn         = {1475-7516},
      address      = {London},
      publisher    = {IOP},
      reportid     = {PUBDB-2015-01784, DESY-14-222. arXiv:1411.6010.
                      IFT-UAM/CSIC-14-124},
      pages        = {029},
      year         = {2015},
      note         = {OA},
      abstract     = {Motivated by UV realisations of Starobinsky-like inflation
                      models, we study generic exponential plateau-like potentials
                      to understand whether an exact f(R)-formulation may still be
                      obtained when the asymptotic shift-symmetry of the potential
                      is broken for larger field values. Potentials which break
                      the shift symmetry with rising exponentials at large field
                      values only allow for corresponding f(R)-descriptions with a
                      leading order term Rn with 1<n<2, regardless of whether the
                      duality is exact or approximate. The R2-term survives as
                      part of a series expansion of the function f(R) and thus
                      cannot maintain a plateau for all field values. We further
                      find a lean and instructive way to obtain a function f(R)
                      describing m2ϕ2-inflation which breaks the shift symmetry
                      with a monomial, and corresponds to effectively logarithmic
                      corrections to an R+R2 model. These examples emphasise that
                      higher order terms in f(R)-theory may not be neglected if
                      they are present at all. Additionally, we relate the
                      function f(R) corresponding to chaotic inflation to a more
                      general Jordan frame set-up. In addition, we consider
                      f(R)-duals of two given UV examples, both from supergravity
                      and string theory. Finally, we outline the CMB phenomenology
                      of these models which show effects of power suppression at
                      low-ℓ.},
      cin          = {T},
      ddc          = {530},
      cid          = {I:(DE-H253)T-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611) / 514 -
                      Theoretical Particle Physics (POF2-514) / HZ-NG-603 -
                      Strings and Cosmology - an Interface for Testing fundamental
                      Theories $(2015_IFV-HZ-NG-603)$ / SPLE - String
                      Phenomenology in the LHC Era (320421)},
      pid          = {G:(DE-HGF)POF3-611 / G:(DE-HGF)POF2-514 /
                      $G:(DE-HGF)2015_IFV-HZ-NG-603$ / G:(EU-Grant)320421},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
      eprint       = {1411.6010},
      howpublished = {arXiv:1411.6010},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1411.6010;\%\%$},
      UT           = {WOS:000355633800029},
      doi          = {10.1088/1475-7516/2015/03/029},
      url          = {https://bib-pubdb1.desy.de/record/208578},
}