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Matching torsion Lambda - term with observations

S. Capozziello·V. F. Cardone·E. Piedipalumbo·M. Sereno·A. Troisi
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Abstract

Taking into account a torsion field gives rise to a negative pressure contribution in cosmological dynamics and then to an accelerated behaviour of Hubble fluid. The presence of torsion has the same effect of a Lambda - term. We obtain a general exact solution which well fits the data coming from high - redshift supernovae and Sunyaev - Zeldovich/X - ray method for the determination of the cosmological parameters. On the other hand, it is possible to obtain observational constraints on the amount of torsion density. A dust dominated Friedmann behaviour is recovered as soon as torsion effects are not relevant.

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S. Capozziello, V. F. Cardone, E. Piedipalumbo, M. Sereno, A. Troisi. 2002-09-30. Matching torsion Lambda - term with observations. https://doi.org/10.1142/s0218271803003074

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