Carroll, Sean M. and Tseng, Chien-Yao and Wise, Mark B. (2010) Translational invariance and the anisotropy of the cosmic microwave background. Physical Review D, 81 (8). Art. No. 083501. ISSN 0556-2821 http://resolver.caltech.edu/CaltechAUTHORS:20100524-141735641
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Primordial quantum fluctuations produced by inflation are conventionally assumed to be statistically homogeneous, a consequence of translational invariance. In this paper we quantify the potentially observable effects of a small violation of translational invariance during inflation, as characterized by the presence of a preferred point, line, or plane.We explore the imprint such a violation would leave on the cosmic microwave background anisotropy, and provide explicit formulas for the expected amplitudes <а_(lm)а^*_(l'm')> of the spherical-harmonic coefficients.
|Additional Information:||© 2010 The American Physical Society. Received 27 August 2009; published 1 April 2010. This research was supported in part by the U.S. Department of Energy and by the Gordon and Betty Moore Foundation.|
|Classification Code:||PACS: 98.80.Cq|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||25 May 2010 14:53|
|Last Modified:||26 Dec 2012 12:04|
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