2008•Chinese Physics LettersRequires access

Constraints on Deceleration Parameter of a 5 D Bounce Cosmological Model from Recent Cosmic Observations

Jiechao Li, Lixin Xu, Jianbo Lu, Baorong Chang, Liu Hong-Ya

Abstract

We study the constraint on deceleration parameter q from the recent SNeIa Gold dataset and observational Hubble data by using a model-independent deceleration parameter q ( z ) = ½ – a /(1 + z ) b under the five-dimensional bounce cosmological model. For the cases of SNeIa Gold dataset, Hubble data, and their combination, the present results show that the constraints on transition redshift z T are 0.35 +0.14 −0.07 , 0.68 +1.47 0.58 , and 0.55 +0.18 −0.09 with 1σ errors, respectively.

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Key concepts: Deceleration parameter, Redshift, Physics, COSMIC cancer database, Constraint (computer-aided design), Hubble's law, Astrophysics, Cosmological model