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A 5D non compact and non Ricci flat Kaluza-Klein Cosmology
classification
🌀 gr-qc
keywords
cosmologycoupledfieldflatkaluza-kleinpartricciscalar
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A model universe is proposed in the framework of 5-dimensional noncompact Kaluza-Klein cosmology which is not Ricci flat. The 4D part as the Robertson-Walker metric is coupled to conventional perfect fluid, and its extra-dimensional part is coupled to a dark pressure through a scalar field. It is shown that neither early inflation nor current acceleration of the 4D universe would happen if the non-vacuum states of the scalar field would contribute to 4D cosmology.
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