Anomalous CMB polarization and gravitational chirality

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dc.creatorContaldi, Carlo R.
dc.creatorMagueijo, Joao
dc.creatorSmolin, Lee
dc.date2008-06-18
dc.date.accessioned2026-07-07T11:51:48Z
dc.date.available2026-07-07T11:51:48Z
dc.descriptionWe consider the possibility that gravity breaks parity, with left and right handed gravitons coupling to matter with a different Newton's constant and show that this would affect their zero-point vacuum fluctuations during inflation. Should there be a cosmic background of gravity waves, the effect would translate into anomalous CMB polarization. Non-vanishing TB (and EB) polarization components emerge, revealing interesting experimental targets. Indeed if reasonable chirality is present a TB measurement would provide the easiest way to detect a gravitational wave background. We speculate on the theoretical implications of such an observation.
dc.description5 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0806.3082
dc.identifierhttp://arxiv.org/abs/0806.3082
dc.identifierPhys.Rev.Lett.101:141101,2008
dc.identifierdoi:10.1103/PhysRevLett.101.141101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204020
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleAnomalous CMB polarization and gravitational chirality
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