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Stochastic Background of Gravitational Waves from Fermions

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dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor.author Enqvist, Kari
dc.contributor.author G. Figueroa, Daniel
dc.contributor.author Meriniemi, Tuukka
dc.date.accessioned 2012-10-12T07:20:01Z
dc.date.available 2012-10-12T07:20:01Z
dc.date.issued 2012-09-05
dc.identifier.citation Enqvist , K , G. Figueroa , D & Meriniemi , T 2012 , ' Stochastic Background of Gravitational Waves from Fermions ' Physical Review D : Particles, Fields, Gravitation and Cosmology , vol 86 , no. 06 , pp. 061301 . en
dc.identifier.issn 1550-7998
dc.identifier.other PURE: 22529183
dc.identifier.other ArXiv: http://arxiv.org/abs/1203.4943v1
dc.identifier.uri http://hdl.handle.net/10138/37183
dc.description.abstract Preheating and other particle production phenomena in the early Universe can give rise to high- energy out-of-equilibrium fermions with an anisotropic stress. We develop a formalism to calculate the spectrum of gravitational waves due to fermions, and apply it to a variety of scenarios after inflation. We pay particular attention to regularization issues. We show that fermion production sources a stochastic background of gravitational waves with a significant amplitude, but we find that typical frequencies of this new background are not within the presently accessible direct detec- tion range. However, small-coupling scenarios might still produce a signal observable by planned detectors, and thus open a new window into the physics of the very early Universe. en
dc.format.extent 5
dc.language.iso eng
dc.publisher American Physical Society
dc.relation.ispartof Physical Review D : Particles, Fields, Gravitation and Cosmology
dc.subject 114 Physical sciences en
dc.title Stochastic Background of Gravitational Waves from Fermions en
dc.type A1 Refereed journal article
dc.description.version Peer reviewed
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevD.86.061301
dc.type.dcmitype document
dc.type.dcmitype textfile
dc.type.uri info:eu-repo/semantics/article
dc.type.uri info:eu-repo/semantics/publishedVersion
dc.contributor.pbl
dc.contributor.pbl

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