Formalizing the slow-roll approximation in inflation.

  title={Formalizing the slow-roll approximation in inflation.},
  author={Liddle and Parsons and Barrow},
  journal={Physical review. D, Particles and fields},
  volume={50 12},
The meaning of the inflationary slow-roll approximation is formalised. Comparisons are made between an approach based on the Hamilton-Jacobi equations, governing the evolution of the Hubble parameter, and the usual scenario based on the evolution of the potential energy density. The vital role of the inflationary attractor solution is emphasised, and some of its properties described. We propose a new measure of inflation, based upon contraction of the comoving Hubble length as opposed to the… 
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Relating spectral indices to tensor and scalar amplitudes in inflation.
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  • Physics
    Physical review. D, Particles and fields
  • 1994
Within an expansion in slow-roll inflation parameters, we derive the complete second-order expressions relating the ratio of tensor to scalar density perturbations and the spectral index of the
The early Universe
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JR 旅客販売総合システム(マルス)における運用及び管理について
A dictionary definition of divisible number: a number is divisible by a number so that every digit of that number isdivisible by 3.
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Numerical recipes