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Chain inflation and the imprint of fundamental physics in the CMBR
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2009 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 3, 007- p.Article in journal (Refereed) Published
Abstract [en]

In this work we investigate characteristic modifications of the spectrum of cosmological perturbations and the spectral index due to chain inflation. We find two types of effects. First, modifications of the spectral index depending on interactions between radiation and the vacuum, and on features of the effective vacuum potential of the underlying fundamental theory. Second, a modulation of the spectrum signaling new physics due to bubble nucleation. This effect is similar to those of transplanckian physics. Measurements of such signatures could provide a wealth of information on the fundamental physics at the basis of inflation.

Place, publisher, year, edition, pages
2009. no 3, 007- p.
Keyword [en]
inflation, transplanckian physics, cosmological phase transitions, CMBR theory
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-129066DOI: 10.1088/1475-7516/2009/03/007ISI: 000265972500022OAI: oai:DiVA.org:uu-129066DiVA: diva2:337531
Available from: 2010-08-06 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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