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The bound $r \leq 16\epsilon$ on the primordial tensor perturbation

Astrophysics 2007-05-23 v1

Abstract

I recall the well-known sufficient conditions for the bound r<16ϵr<16\epsilon on the spectrum of the primordial tensor perturbation. Two recent papers claim a violation of this bound, without stating explicitely any violation of the sufficient conditions.

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Cite

@article{arxiv.astro-ph/0508127,
  title  = {The bound $r \leq 16\epsilon$ on the primordial tensor perturbation},
  author = {David H. Lyth},
  journal= {arXiv preprint arXiv:astro-ph/0508127},
  year   = {2007}
}

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2 pages