Inflation and Singularity in Einstein-Cartan Theory

被引：0
|
作者：
Huang Zeng-Guang [1 ]
Fang Wei [2 ,4 ]
Lu Hui-Qing [3 ,4 ]
机构：
[1] Huaihai Inst Technol, Sch Sci, Lianyungang 222005, Peoples R China
[2] Shanghai Normal Univ, Dept Phys, Shanghai 200234, Peoples R China
[3] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[4] Shanghai Normal Univ, Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2011年 / 28卷 / 02期
基金：
中国国家自然科学基金;
关键词：
COSMOLOGICAL MODELS; GENERAL-RELATIVITY; WEYSSENHOFF FLUID; SPIN; TORSION;
D O I：
10.1088/0256-307X/28/2/029802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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 - sigma(2) <= 0), the Universe can not avoid singularity. If S-2 - sigma(2) > -rho(v)/2 (rho(v) is vacuum energy density), the Universe can undergo an inflation phase. Examples of Bianchi type-IX, I and V cosmological models are discussed.
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页数：4
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