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An extended class of FRW models with creation of particles out of gravitational energy
V.B. Johri,
Published in
Volume: 33
Issue: 6
Pages: 287 - 297
Uniform cosmological models with deceleration parameter q = constant, are studied in an enlarged relativistic frame-work wherein the universe is regarded as an open thermodynamical system, using Prigogine's hypothesis of creation of matter out of gravitational energy. A broad classification of non-singular models with accelerating and decelerating expansion is given; the big bang (singular) models occur as a particular case corresponding to 'no creation condition' in this regime. The inflationary model with de Sitter expansion belongs to particle creation domain with q = -1. © 1996 OPA (Overseas Publishers Association).
About the journal
JournalAstrophysical Letters and Communications