dc.contributor.author | Hindmarsh, Mark | |
dc.contributor.author | Lizarraga Olano, Joanes | |
dc.contributor.author | Urrestilla Urizabal, Jon | |
dc.contributor.author | Daverio, David | |
dc.contributor.author | Kunz, Martin | |
dc.date.accessioned | 2023-12-29T08:47:10Z | |
dc.date.available | 2023-12-29T08:47:10Z | |
dc.date.issued | 2019-04-26 | |
dc.identifier.citation | Physical Review D 99(8) : (2019) // Article ID 083522 | es_ES |
dc.identifier.issn | 2470-0029 | |
dc.identifier.issn | 2470-0010 | |
dc.identifier.issn | 10.1016/j.icarus.2017.07.017 | |
dc.identifier.uri | http://hdl.handle.net/10810/63701 | |
dc.description.abstract | We present results from the first simulations of networks of Type I 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, β. We find that the mean string separation shows no dependence on β, and that the energy-momentum tensor correlators decrease approximately in proportion to the square of the string tension, with additional O(1) correction factors which asymptote to constants below β≲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 β≃10−15, even strings formed at 1016 GeV (approximately the grand unification scale in supersymmetric extensions of the Standard Model) can be compatible with CMB constraints. | es_ES |
dc.description.sponsorship | This work has been supported by two grants from the Swiss National Supercomputing Centre (CSCS) under Project IDs s319 and s546. In addition, this work has been possible thanks to the computing infrastructure of the i2Basque academic network, the COSMOS Consortium supercomputer (within the DiRAC Facility jointly funded by STFC and the Large Facilities Capital Fund of BIS), and the Andromeda/Baobab clus- ter of the University of Geneva. MH acknowledges support from the Science and Technology Facilities Council (grant number ST/L000504/1). DD and MK acknowledge support from the Swiss NSF. JL and JU acknowledge support from Eusko Jaurlaritza (IT-979-16) and the Spanish Ministry MINECO (FPA2015-64041-C2- 1P). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | APS | es_ES |
dc.relation | info:eu-repo/grantAgreement//MINECO/FPA2015-64041-C2- 1P | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | topological defects | es_ES |
dc.subject | CMB | es_ES |
dc.subject | Early universe | es_ES |
dc.title | Type I Abelian Higgs strings: evolution and Cosmic Microwave Background constraints | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2019 American Physical Society | es_ES |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0019103517300659 | es_ES |
dc.departamentoes | Física | es_ES |
dc.departamentoeu | Fisika | es_ES |