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Accelerating cosmological expansion from shear and bulk viscosity
The dissipation of energy from local velocity perturbations in the cosmological fluid affects the time evolution of spatially averaged fluid dynamic fields and the cosmological solution of Einstein's field equations. We show how this backreaction effect depends on shear and bulk viscosity and o...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.114.091301 http://cds.cern.ch/record/1969160 |