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Dark goo: Bulk viscosity as an alternative to dark energy

We present a simple (microscopic) model in which bulk viscosity plays a role in explaining the present acceleration of the universe. The effect of bulk viscosity on the Friedmann equations is to turn the pressure into an "effective" pressure containing the bulk viscosity. For a sufficientl...

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Detalles Bibliográficos
Autores principales: Gagnon, Jean-Sebastien, Lesgourgues, Julien
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1475-7516/2011/09/026
http://cds.cern.ch/record/1366447