摘要
Within the framework of Einstein-Cartan theory,we obtain a general condition leading to singularity and inflation for all Bianchi cosmological models.If the spin energy is smaller than anisotropic energy density(i.e.S^(2)σ^(2)<0),the Universe can not avoid singularity.If S^(2)-σ^(2)>-pv/^(2)(pv is vacuum energy density),the Universe can undergo an inflation phase.Examples of Bianchi type-IX,I and V cosmological models are discussed.
作者
HUANG Zeng-Guang
FANG Wei
LU Hui-Qing
黄增光;方伟;陆惠卿(School of Science,Huaihai Institute of Technology,Lianyungang 222005;Department of Physics,Shanghai Normal University,Shanghai 200234;Department of Physics,Shanghai University,Shanghai 200444;The Shanghai Key Lab of Astrophysics,Shanghai Normal University,Shanghai 200234)
基金
Partially supported by the Natural Science Foundation of Jiangsu Province under Grant No 07KJD140011
the National Natural Science Foundation of China under Grant No 10573012
Shanghai Municipal Science and Technology Commission(No 04dz05905).
