Inflation and Singularity in Einstein-Cartan Theory

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2011,（2）
• 页码范围: 254-257
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/28/2/029802

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.S2 -σ2 < 0), the Universe can not avoid singularity.If S2 - σ2 > -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.