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arXiv · hep-th/0201189

The Corley-Jacobson dispersion relation and trans-Planckian inflation

Jerome Martin·Robert H. Brandenberger
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Abstract

In this Letter we study the dependence of the spectrum of fluctuations in inflationary cosmology on possible effects of trans-Planckian physics, using the Corley/Jacobson dispersion relations as an example. We compare the methods used in previous work [1] with the WKB approximation, give a new exact analytical result, and study the dependence of the spectrum obtained using the approximate method of Ref. [1] on the choice of the matching time between different time intervals. We also comment on recent work subsequent to Ref. [1] on the trans-Planckian problem for inflationary cosmology.

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Jerome Martin, Robert H. Brandenberger. 2002-01-24. The Corley-Jacobson dispersion relation and trans-Planckian inflation. https://doi.org/10.1103/physrevd.65.103514

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