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dc.date.accessioned 2021-09-30T14:22:02Z
dc.date.available 2021-09-30T14:22:02Z
dc.date.issued 2008
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/125923
dc.description.abstract We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, cosmic microwave background, and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant {alpha} and the Higgs vacuum expectation value without assuming any theoretical framework. A variation in leads to a variation in the electron mass, among other effects. Along the same line, we study the variation of {alpha} and the electron mass m{sub e}. In a purely phenomenological fashion, we derive a relationship between both variations. en
dc.language en es
dc.subject Physics es
dc.subject Big bang nucleosynthesis es
dc.subject Spectral density es
dc.subject Cosmic microwave background es
dc.subject Time-variation of fundamental constants es
dc.subject Fine-structure constant es
dc.subject Theoretical physics es
dc.subject Astrophysics es
dc.subject Cosmic background radiation es
dc.subject Vacuum expectation value es
dc.subject Universe es
dc.title Early universe constraints on time variation of fundamental constants en
dc.type Articulo es
sedici.identifier.other arXiv:0809.2033v1 es
sedici.identifier.other doi:10.1103/physrevd.78.083527 es
sedici.identifier.issn 1550-7998 es
sedici.identifier.issn 1550-2368 es
sedici.creator.person Landau, Susana J. es
sedici.creator.person Mosquera, Mercedes Elisa es
sedici.creator.person Scóccola, Claudia Graciela es
sedici.creator.person Vucetich, Héctor es
sedici.subject.materias Ciencias Astronómicas es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Astronómicas y Geofísicas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Physical Review D es
sedici.relation.journalVolumeAndIssue vol. 78, no. 8 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)