Acceleration-free spherically symmetric inhomogeneous cosmological model with shear viscosity

Some new exact solutions to the Einstein equations with an acceleration-free imperfect-fluid source are obtained. Some physical restrictions on the solutions are discussed. Cosmological models built out of these solutions are found to have increasing entropy per baryon and not possess any flatness p...

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Veröffentlicht in:	Physical review. D, Particles and fields Particles and fields, 1991-09, Vol.44 (6), p.1722-1730
Hauptverfasser:	YAOBING DENG, MANNHEIM, P. D
Format:	Artikel
Sprache:	eng
Schlagworte:	640106 - Astrophysics & Cosmology- Cosmology 645400 - High Energy Physics- Field Theory ANALYTICAL SOLUTION Astronomy BARYONS BOUNDARY CONDITIONS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMIC GASES COSMOLOGICAL MODELS Earth, ocean, space EINSTEIN FIELD EQUATIONS Elementary particle and nuclear processes ELEMENTARY PARTICLES ENERGY DENSITY ENERGY-MOMENTUM TENSOR ENTROPY EQUATIONS Exact sciences and technology FERMIONS FIELD EQUATIONS FLUIDS Fundamental aspects of astrophysics Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations GASES HADRONS MATHEMATICAL MODELS METRICS PARTICLE MODELS PHYSICAL PROPERTIES PHYSICS OF ELEMENTARY PARTICLES AND FIELDS STANDARD MODEL TENSORS THERMODYNAMIC PROPERTIES UNIFIED GAUGE MODELS VISCOSITY
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Zusammenfassung:	Some new exact solutions to the Einstein equations with an acceleration-free imperfect-fluid source are obtained. Some physical restrictions on the solutions are discussed. Cosmological models built out of these solutions are found to have increasing entropy per baryon and not possess any flatness problem.
ISSN:	0556-2821 1089-4918
DOI:	10.1103/PhysRevD.44.1722