Qualitative isotropic cosmology with cosmological constant and with allowance for dissipation

Details Qualitative isotropic cosmology with cosmological constant and with allowance for dissipation Qualitative isotropic cosmology with cosmological constant and with allowance for dissipation

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978zhetf..75.1176n&link_type=abstract

(Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, vol. 75, Oct. 1978, p. 1176-1180.) Soviet Physics - JETP, vol. 48, Oct. 1978

Mathematics

2

Cosmology, Energy Dissipation, Gas Viscosity, Isotropic Media, Mathematical Models, Relativity, Einstein Equations, Flux Density, Hydrodynamic Equations, Thermodynamics, Transformations (Mathematics)

Scientific paper

New types of evolution that arise in isotropic cosmological Friedmann models with cosmological constant when allowance is made for bulk viscosity are described. A family of solutions is obtained for a closed model without singularities of the metric and the energy density. The stability of static solutions in the presence of viscosity is investigated. The coefficient of viscosity is assumed to be a function of the energy density that has power-law asymptotic behaviors at small and large values of the argument.

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