Early universe constraints on time variation of fundamental constants

dc.creatorLandau, Susana J.
dc.creatorMosquera, Mercedes Elisa
dc.creatorScóccola, Claudia Graciela
dc.creatorVucetich, Héctor
dc.date2008
dc.date2021-09-30T14:22:02Z
dc.date.accessioned2023-07-15T03:34:07Z
dc.date.available2023-07-15T03:34:07Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/125923
dc.identifierissn:1550-7998
dc.identifierissn:1550-2368
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7466206
dc.descriptionWe 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.
dc.descriptionFacultad de Ciencias Astronómicas y Geofísicas
dc.formatapplication/pdf
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectCiencias Astronómicas
dc.subjectPhysics
dc.subjectBig bang nucleosynthesis
dc.subjectSpectral density
dc.subjectCosmic microwave background
dc.subjectTime-variation of fundamental constants
dc.subjectFine-structure constant
dc.subjectTheoretical physics
dc.subjectAstrophysics
dc.subjectCosmic background radiation
dc.subjectVacuum expectation value
dc.subjectUniverse
dc.titleEarly universe constraints on time variation of fundamental constants
dc.typeArticulo
dc.typeArticulo


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