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Cross-correlation of cosmological birefringence with CMB temperature

Caldwell, Robert R. and Gluscevic, Vera and Kamionkowski, Marc (2011) Cross-correlation of cosmological birefringence with CMB temperature. Physical Review D, 84 (4). Art. No. 043504. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:20110822-092055341

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Abstract

Theories for new particle and early-Universe physics abound with pseudo-Nambu-Goldstone fields that arise when global symmetries are spontaneously broken. The coupling of these fields to the Chern-Simons term of electromagnetism may give rise to cosmological birefringence (CB), a frequency-independent rotation of the linear polarization of photons as they propagate over cosmological distances. Inhomogeneities in the CB-inducing field may yield a rotation angle that varies across the sky. Here we note that such a spatially-varying birefringence may be correlated with the cosmic microwave background (CMB) temperature. We describe quintessence scenarios where this cross-correlation exists and other scenarios where the scalar field is simply a massless spectator field, in which case the cross-correlation does not exist. We discuss how the cross-correlation between CB-rotation angle and CMB temperature may be measured with CMB polarization. This measurement may improve the sensitivity to the CB signal, and it can help discriminate between different models of CB.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.84.043504DOIUNSPECIFIED
http://prd.aps.org/abstract/PRD/v84/i4/e043504PublisherUNSPECIFIED
Additional Information:© 2011 American Physical Society. Received 7 April 2011; published 5 August 2011. We thank C. Hirata for useful discussions. MK thanks the support of the Miller Institute for Basic Research in Science and the hospitality of the Department of Physics at the University of California, Berkeley, where part of this work was completed. This work was supported in part by NSF AST-0349213 at Dartmouth and by DoE DE-FG03-92-ER40701, NASA NNX10AD04G, and the Gordon and Betty Moore Foundation at Caltech.
Group:TAPIR
Funders:
Funding AgencyGrant Number
NSFAST-0349213
Department of Energy (DOE)DE-FG03-92-ER40701
NASANNX10AD04G
Caltech Gordon and Betty Moore FoundationUNSPECIFIED
Classification Code:PACS: 98.80.-k, 98.70.Vc, 95.36.+x
Record Number:CaltechAUTHORS:20110822-092055341
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110822-092055341
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24967
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Aug 2011 16:11
Last Modified:26 Dec 2012 13:29

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