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Spontaneous isotropy breaking: A mechanism for CMB multipole alignments

PHYSICAL REVIEW D, no. 10 (2005)

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We introduce a class of models in which statistical isotropy is broken spontaneously in the CMB by a nonlinear response to long-wavelength fluctuations in a mediating field. These fluctuations appear as a gradient locally and pick out a single preferred direction. The nonlinear response imprints this direction in a range of multipole mome...更多

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