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.
|Original language||English (US)|
|Title of host publication||CMB Polarization Workshop|
|Subtitle of host publication||Theory and Foregrounds - CMBPol Mission Concept Study|
|Publisher||American Institute of Physics Inc.|
|Number of pages||111|
|State||Published - 2009|
|Event||CMB Polarization Workshop: Theory And Foregrounds - Batavia, IL, United States|
Duration: Jun 23 2008 → Jun 26 2008
|Name||AIP Conference Proceedings|
|Other||CMB Polarization Workshop: Theory And Foregrounds|
|Period||6/23/08 → 6/26/08|
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