2001•Acta Physica SinicaOpen access

THE STABILITY OF A KIND OF COSMOLOGICAL MODEL

Yongjiu Wang, Zhiming Tang, 湖南师范大学物理研究所,长沙410081

Abstract

The stability of a kind of 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 no-zero cosmological constant.

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Key concepts: Cosmological constant, Physics, Perfect Cosmological Principle, Cosmological model, Lambda-CDM model, Stability (learning theory), Theoretical physics, Cosmology