Coherent phase argument for inflation

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Cosmologists have developed a phenomenally successful picture of structure in the universe based on the idea that the universe expanded exponentially in its earliest moments. There are three pieces of evidence for this exponential expansion--inflation--from observations of anisotropies in the cosmic microwave background. First, the shape of the primordial spectrum is very similar to that predicted by generic inflation models. Second, the angular scale at which the first acoustic peak appears is consistent with the flat universe predicted by inflation. Here the author describes the third piece of evidence, perhaps the most convincing of all: the phase coherence needed to ... continued below

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395 Kilobytes pages

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Dodelson, Scott March 17, 2004.

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Cosmologists have developed a phenomenally successful picture of structure in the universe based on the idea that the universe expanded exponentially in its earliest moments. There are three pieces of evidence for this exponential expansion--inflation--from observations of anisotropies in the cosmic microwave background. First, the shape of the primordial spectrum is very similar to that predicted by generic inflation models. Second, the angular scale at which the first acoustic peak appears is consistent with the flat universe predicted by inflation. Here the author describes the third piece of evidence, perhaps the most convincing of all: the phase coherence needed to account for the clear peak/trough structure observed by the WMAP satellite and its predecessors. The author also discusses alternatives to inflation that have been proposed recently and explain how they produce coherent phases.

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395 Kilobytes pages

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  • 4th Topical Workshop on Particle Physics and Cosmology: Neutrinos, Flavor Physics and Precision Cosmology, Cairns, Queensland (AU), 06/09/2003--06/13/2003

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  • Report No.: FERMILAB-Conf-03/450-A
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 822091
  • Archival Resource Key: ark:/67531/metadc781043

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  • March 17, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • Aug. 4, 2016, 7:41 p.m.

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Dodelson, Scott. Coherent phase argument for inflation, article, March 17, 2004; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc781043/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.