Bounds on Generic High-energy Physics Modifications to the Primordial Power Spectrum from Back-reaction on the Metric

@inproceedings{Porrati2004BoundsOG,
title={Bounds on Generic High-energy Physics Modifications to the Primordial Power Spectrum from Back-reaction on the Metric},
author={Massimo Porrati},
year={2004}
}

Modifications to the primordial power spectrum of inflationary density perturbations have been studied recently using a boundary effective field theory approach. In the approximation of a fluctuating quantum field on a fixed background, the generic effect of new physics is encoded in parameters of order H/M. Here, we point out that the back-reaction on the metric can be neglected only when these parameters obey certain bounds that may put them beyond the reach of observation.

N Kaloper, M Kleban, A E Lawrence, S Shenker, A Lawrence, L Susskind

Phys. Rev. D

2002

2 Excerpts

[arXiv:astro-ph

J Martin, R H Brandenberger, +6 authorsMod Phys

Phys. Rev. D Phys. Lett. A Phys. Rev. D Phys. Rev…

2001

1 Excerpt

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