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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Abstract
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.
| Item Type: | Article | ||||||
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| 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. | ||||||
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| Classification Code: | PACS: 98.80.Cq | ||||||
| Record Number: | CaltechAUTHORS:20100524-141735641 | ||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20100524-141735641 | ||||||
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| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 18410 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Ruth Sustaita | ||||||
| Deposited On: | 25 May 2010 14:53 | ||||||
| Last Modified: | 26 Dec 2012 12:04 |
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