CMB Anomalies from Relic Anisotropy

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dc.creatorGumrukcuoglu, A. E.
dc.creatorContaldi, Carlo R.
dc.creatorPeloso, Marco
dc.date2006-08-18
dc.date2007-03-21
dc.date.accessioned2026-07-07T08:41:55Z
dc.date.available2026-07-07T08:41:55Z
dc.descriptionMost of the analysis of the Cosmic Microwave Background relies on the assumption of statistical isotropy. However, given some recent evidence pointing against isotropy, as for instance the observed alignment of different multipoles on large scales, it is worth testing this assumption against the increasing amount of available data. As a pivot model, we assume that the spectrum of the primordial perturbations depends also on their directionality (rather than just on the magnitude of their momentum, as in the standard case). We explicitly compute the correlation matrix for the temperature anisotropies in the simpler case in which there is a residual isotropy between two spatial directions. As a concrete example, we consider a different initial expansion rate along one direction, and the following isotropization which takes place during inflation. Depending on the amount of inflation, this can lead to broken statistical isotropy on the largest observable scales.
dc.description6 pages, 2 .ps figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0608405
dc.identifierhttp://arxiv.org/abs/astro-ph/0608405
dc.identifierProceedings of the Eleventh Marcel Grossmann Meeting on General Relativity, ed. H. Kleinert, R.T. Jantzen, and R. Ruffini, World Scientific, 2007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141827
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleCMB Anomalies from Relic Anisotropy
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