Effective Search Templates for a Primordial Stochastic Gravitational Wave Background

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dc.creatorChiba, Takeshi
dc.creatorHimemoto, Yoshiaki
dc.creatorYamaguchi, Masahide
dc.creatorYokoyama, Jun'ichi
dc.date2007-05-21
dc.date2007-08-21
dc.date.accessioned2026-07-07T10:55:42Z
dc.date.available2026-07-07T10:55:42Z
dc.descriptionWe calculate the signal-to-noise ratio (SNR) of the stochastic gravitational-wave background in an extreme case that its spectrum has a sharp falloff with its amplitude close to the detection threshold. Such a spectral feature is a characteristic imprint of the change in the number of relativistic degrees of freedom on the stochastic background generated during inflation in the early Universe. We find that, although SNR is maximal with the correct template which is proportional to the assumed real spectrum, its sensitivity to the shape of template is fairly weak indicating that a simple power-law template is sufficient to detect the signature.
dc.description13 pages, 4 figures, final version to be published in PRD
dc.identifierhttps://arxiv.org/abs/0705.2851
dc.identifierhttp://arxiv.org/abs/0705.2851
dc.identifierPhys.Rev.D76:043516,2007
dc.identifierdoi:10.1103/PhysRevD.76.043516
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186163
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleEffective Search Templates for a Primordial Stochastic Gravitational Wave Background
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