Qualitative analysis of dissipative cosmologies
classification
🌀 gr-qc
astro-ph
keywords
dissipativesolutionsalmostalthoughanalysisanalyzedbulkcondition
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The evolution of an homogeneous and isotropic dissipative fluid is analyzed using dynamical systems techniques. The dissipation is driven by bulk viscous pressure and the truncated Israel-Stewart theory is used. Although almost all solutions inflate, we show that only few of them can be considered as physical solutions since the dominant energy condition is not satisfied.
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Cited by 1 Pith paper
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Primordial black hole formation in bulk-viscous cosmology
Bulk viscosity raises the critical collapse threshold for primordial black holes by an amount comparable to the viscosity strength and increases the resulting black hole masses.
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