Quantifying the behaviour of curvature perturbations during inflation

@article{Nalson2011QuantifyingTB,
  title={Quantifying the behaviour of curvature perturbations during inflation},
  author={Ellie Nalson and Adam J. Christopherson and Ian Huston and Karim A. Malik},
  journal={Classical and Quantum Gravity},
  year={2011},
  volume={30}
}
How much does the curvature perturbation change after it leaves the horizon, and when should one evaluate the power spectrum? To answer these questions we study single field inflation models numerically, and compare the evolution of different curvature perturbations from horizon crossing to the end of inflation. In particular we calculate the number of efolds it takes for the curvature perturbation at a given wavenumber to settle down to within a given fraction of their value at the end of… 

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