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Scaling solutions from interacting fluids

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arxiv gr-qc/0011073 v1 pith:R2OFKH33 submitted 2000-11-21 gr-qc

Ana Nunes (Lisbon U.) , Jose P. Mimoso (Lisbon U.) , Tiago C. Charters (ISEL) This is my paper · ORCID
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keywords solutionsscalingbehaviourcomponentsfluidinteractinginteractionsome
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We examine the dynamical implications of an interaction between some of the fluid components of the universe. We consider the combination of three matter components, one of which is a perfect fluid and the other two are interacting. The interaction term generalizes the cases found in scalar field cosmologies with an exponential potential. We find that attracting scaling solutions are obtained in several regions of parameter space, that oscillating behaviour is possible, and that new curvature scaling solutions exist. We also discuss the inflationary behaviour of the solutions and present some of the constraints on the strength of the coupling, namely those arising from nucleosynthesis.

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Cited by 2 Pith papers

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