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Translational invariance and the anisotropy of the cosmic microwave background

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 2470-0010. doi:10.1103/PhysRevD.81.083501.

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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.

Item Type:Article
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Carroll, Sean M.0000-0002-4226-5758
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.
Group:Caltech Theory, Moore Center for Theoretical Cosmology and Physics
Funding AgencyGrant Number
Department of EnergyUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Issue or Number:8
Classification Code:PACS: 98.80.Cq
Record Number: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
Deposited By: Ruth Sustaita
Deposited On:25 May 2010 14:53
Last Modified:08 Nov 2021 23:43

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