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Title: Large gravitational waves and the Lyth bound in multi-brane inflation

Abstract

It is shown that multi-M5-brane inflation in heterotic M-theory gives rise to a detectable gravitational wave power spectrum with tensor fraction r typically larger than the projected experimental sensitivity, r{sub exp} = 0.01. A measurable gravitational wave power spectrum entails a large inflationary energy scale and a super-Planckian inflaton variation. They present serious problems for particle theory model building as regards a reliable effective field theory description. These problems are eased or even absent in multi-brane inflation models and multi-M5-brane inflation, in particular.

Authors:
 [1]
  1. Arnold Sommerfeld Center for Theoretical Physics, Department fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Theresienstrasse 37, 80333 Muenchen (Germany)
Publication Date:
OSTI Identifier:
22156671
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2008; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BRANES; FIELD THEORIES; GRAVITATIONAL WAVES; INFLATIONARY UNIVERSE; M-THEORY; SENSITIVITY; SPECTRA; TENSORS

Citation Formats

Krause, Axel. Large gravitational waves and the Lyth bound in multi-brane inflation. United States: N. p., 2008. Web. doi:10.1088/1475-7516/2008/07/001.
Krause, Axel. Large gravitational waves and the Lyth bound in multi-brane inflation. United States. doi:10.1088/1475-7516/2008/07/001.
Krause, Axel. Tue . "Large gravitational waves and the Lyth bound in multi-brane inflation". United States. doi:10.1088/1475-7516/2008/07/001.
@article{osti_22156671,
title = {Large gravitational waves and the Lyth bound in multi-brane inflation},
author = {Krause, Axel},
abstractNote = {It is shown that multi-M5-brane inflation in heterotic M-theory gives rise to a detectable gravitational wave power spectrum with tensor fraction r typically larger than the projected experimental sensitivity, r{sub exp} = 0.01. A measurable gravitational wave power spectrum entails a large inflationary energy scale and a super-Planckian inflaton variation. They present serious problems for particle theory model building as regards a reliable effective field theory description. These problems are eased or even absent in multi-brane inflation models and multi-M5-brane inflation, in particular.},
doi = {10.1088/1475-7516/2008/07/001},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 07,
volume = 2008,
place = {United States},
year = {2008},
month = {7}
}