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Probing inflation with CMB polarization

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posted on 2023-06-08, 10:04 authored by Andrew Liddle
We summarize the utility of precise cosmic microwave background (CMB) polarization measurements as probes of the physics of inflation. We focus on the prospects for using CMB measurements to differentiate various inflationary mechanisms. In particular, a detection of primordial B-mode polarization would demonstrate that inflation occurred at a very high energy scale, and that the inflaton traversed a super-Planckian distance in field space. We explain how such a detection or constraint would illuminate aspects of physics at the Planck scale. Moreover, CMB measurements can constrain the scale-dependence and non-Gaussianity of the primordial fluctuations and limit the possibility of a significant isocurvature contribution. Each such limit provides crucial information on the underlying inflationary dynamics. Finally, we quantify these considerations by presenting forecasts for the sensitivities of a future satellite experiment to the inflationary parameters.

History

Publication status

  • Published

ISSN

0094243X

Volume

1141

Pages

110.0

Presentation Type

  • paper

Event name

CMB Polarization Workshop: Theory And Foregrounds

Event location

Fermilab in Batavia (IL)

Event type

conference

Event date

23–26 June 2008

ISBN

978-073540678-0

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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