Type I Abelian Higgs strings : Evolution and cosmic microwave background constraints

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dc.contributor University of Helsinki, Particle Physics and Astrophysics en
dc.contributor.author Hindmarsh, Mark
dc.contributor.author Lizarraga, Joanes
dc.contributor.author Urrestilla, Jon
dc.contributor.author Daverio, David
dc.contributor.author Kunz, Martin
dc.date.accessioned 2019-05-17T11:02:01Z
dc.date.available 2019-05-17T11:02:01Z
dc.date.issued 2019-04-26
dc.identifier.citation Hindmarsh , M , Lizarraga , J , Urrestilla , J , Daverio , D & Kunz , M 2019 , ' Type I Abelian Higgs strings : Evolution and cosmic microwave background constraints ' , Physical Review D , vol. 99 , no. 8 , 083522 . https://doi.org/10.1103/PhysRevD.99.083522 en
dc.identifier.issn 2470-0010
dc.identifier.other PURE: 124735819
dc.identifier.other PURE UUID: b480635b-d746-4c54-aad1-f9570bb95c9f
dc.identifier.other WOS: 000466426300002
dc.identifier.other ORCID: /0000-0002-9307-437X/work/57546888
dc.identifier.uri http://hdl.handle.net/10138/301846
dc.description.abstract We present results from the first simulations of networks of Type 1 Abelian Higgs cosmic strings to include both matter and radiation eras and cosmic microwave background (CMB) constraints. In Type I strings, the string tension is a slowly decreasing function of the ratio of the scalar and gauge mass-squared, beta. We find that the mean string separation shows no dependence on beta, and that the energy-momentum tensor correlators decrease approximately in proportion to the square of the string tension, with additional 0(1) correction factors which asymptote to constants below beta less than or similar to 0.01. Strings in models with low self-couplings can therefore satisfy current CMB bounds at higher symmetry-breaking scales. This is particularly relevant for models where the gauge symmetry is broken in a supersymmetric flat direction, for which the effective self-coupling can be extremely small. If our results can be extrapolated to beta similar or equal to 10(-15), even strings formed at 10(16) GeV (approximately the grand unification scale in supersymmetric extensions of the Standard Model) can be compatible with CMB constraints. en
dc.format.extent 12
dc.language.iso eng
dc.relation.ispartof Physical Review D
dc.rights en
dc.subject STABILITY en
dc.subject RAYS en
dc.subject 114 Physical sciences en
dc.title Type I Abelian Higgs strings : Evolution and cosmic microwave background constraints en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1103/PhysRevD.99.083522
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion

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