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Article overview
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Two-point correlators revisited: Fast and slow scales in multifield models of Inflation | | José T. Gálvez Ghersi
; Andrei V. Frolov
; | | Date: |
15 Sep 2016 | | Abstract: | We study the structure of two-point correlators of the inflationary field
fluctuations in order to improve the accuracy and efficiency of the existing
spectral methods. We present a description motivated by the separation of the
fast and slow evolving components of the spectrum. Our purpose is to rephrase
all the relevant equations of motion in terms of slowly varying quantities.
This is important in order to consider the contribution from high-frequency
modes to the spectrum without affecting computational performance. The
slow-roll approximation is not required to reproduce the main distinctive
features in the power spectrum for each specific model of inflation. | | Source: | arXiv, 1609.4770 | | Services: | Forum | Review | PDF | Favorites | |
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