Polarization analysis of gravitational-wave backgrounds from the correlation signals of ground-based interferometers: measuring a circular-polarization mode

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dc.creatorSeto, Naoki
dc.creatorTaruya, Atsushi
dc.date2008-01-28
dc.date.accessioned2026-07-07T11:55:35Z
dc.date.available2026-07-07T11:55:35Z
dc.descriptionThe Stokes V parameter characterizes asymmetry of amplitudes between right- and left-handed waves, and non-vanishing value of the V parameter yields a circularly polarized signal. Cosmologically, V parameter may be a direct probe for parity violation in the universe. In this paper, we theoretically investigate a measurement of this parameter, particularly focusing on the gravitational-wave backgrounds observed via ground-based interferometers. In contrast to the traditional analysis that only considers the total amplitude (or equivalently $Ω_{GW}$), the signal analysis including a circular-polarized mode has a rich structure due to the multi-dimensionality of target parameters. We show that, by using the network of next-generation detectors, separation between polarized and unpolarized modes can be performed with small statistical loss induced by their correlation.
dc.description27 pages
dc.identifierhttps://arxiv.org/abs/0801.4185
dc.identifierhttp://arxiv.org/abs/0801.4185
dc.identifierPhys.Rev.D77:103001,2008
dc.identifierdoi:10.1103/PhysRevD.77.103001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205294
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titlePolarization analysis of gravitational-wave backgrounds from the correlation signals of ground-based interferometers: measuring a circular-polarization mode
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