Lyth Bound, eternal inflation and future cosmological missions

  title={Lyth Bound, eternal inflation and future cosmological missions},
  author={Alessandro Di Marco},
  journal={Physical Review D},
  • A. Marco
  • Published 13 June 2017
  • Physics
  • Physical Review D
In this paper we provide a new expression for the variation of the inflaton field $\Delta\phi$ during the horizon crossing epoch in the context of single field slow roll inflationary models. Such an expression represents a generalization of the well-know Lyth bound. We also explore the consequences of a detection of permille order of the tensor-to-scalar ratio amplitude, $r$, as well as an improvement on the estimation of the scalar spectral index, $n_s$ and its running $\alpha_s$, by the… 

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