2002•理论物理通讯：英文版Requires access

Cosmological Constant and Stability of the Cosmological Models

WANGYong-Jiu, TANGZhi-Ming

Abstract

The importance of cosmological constant for the cosmological models is given. The variations of the cosmological model for parameters λ and k were discussed respectively. Near λ = 0, the cosmological model is unstable with the change of λ, and near λ = β = 0, the cosmological model is unstable with the change of k. So when we consider the stable cosmological model, we must consider the nonzero cosmological constant.

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Key concepts: Cosmological constant, Physics, Lambda-CDM model, Perfect Cosmological Principle, Quintessence, Constant (computer programming), Cosmology, Cosmological model