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dc.date.accessioned 2010-08-25T18:11:12Z
dc.date.available 2010-08-25T03:00:00Z
dc.date.issued 2001
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/2051
dc.description.abstract We propose to generalize Bekenstein model for the time variation of the fine structure "constant" αem to QCD strong coupling constant αS. We find that, except for a “fine tuned” choice of the free parameters, the extension can not be performed trivially without being in conflict with experimental constraints and this rules out αS variability. This is due largely to the huge numerical value of the QCD vacuum gluon condensate when compared to the matter density of the universe. en
dc.format.extent 1-5 es
dc.language en es
dc.subject fundamental constants; elementary particles processes; cosmology es
dc.subject astrofísica es
dc.title Bekenstein model and the time variation of the strong coupling constant en
dc.type Articulo es
sedici.identifier.uri http://arxiv.org/pdf/astro-ph/0008436v3.pdf es
sedici.identifier.uri http://www.sciencedirect.com/science/article/pii/S0370269301002933 es
sedici.identifier.other https://doi.org/10.1016/S0370-2693(01)00293-3 es
sedici.identifier.issn 0370-2693 es
sedici.creator.person Chamoun, Nidal es
sedici.creator.person Landau, Susana Judith 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 Preprint es
sedici.rights.license Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/
sedici.description.peerReview peer-review es
sedici2003.identifier ARG-UNLP-ART-0000006350 es
sedici.relation.journalTitle Physics Letters B es
sedici.relation.journalVolumeAndIssue vol. 504, no. 1-2 es


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