Il Nuovo Cimento B (1971-1996)

, Volume 111, Issue 6, pp 693–699 | Cite as

Non-singular viscous universe with decaying vacuum energy

  • A. I. Arbab
  • A. M. M. Abdel-Rahman


The effect of bulk viscosity on decaying vacuum cosmologies is investigated in a non-singular scenario. The considered model describes a closed universe exhibiting several features of previously proposed non-viscous cosmologies. In particular, it predicts that nucleosynthesis proceeds as in the standard model provided the Universe today is matter-dominated.


98.80.Cq Particle-theory and field-theory models of the early Universe cosmic pancakes cosmic strings chaotic phenomena inflationary universe 


98.80.Dr Theoretical cosmology 


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Copyright information

© Società Italiana di Fisica 1996

Authors and Affiliations

  • A. I. Arbab
    • 1
  • A. M. M. Abdel-Rahman
    • 1
  1. 1.Department of Physics, Faculty of ScienceUniversity of KhartoumKhartoumSudan

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