arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1201.4302hep-thastro-ph.COgr-qc
收藏

具有杨-米尔斯场的宇宙学模型

Cosmological models with Yang-Mills fields

E. Elizalde, A. J. Lopez-Revelles, S. D. Odintsov, S. Yu. Vernov

摘要:

研究了SU(2)杨-米尔斯场的宇宙学模型。针对一个具有最小耦合杨-米尔斯拉格朗日量的具体模型,提出了相应的重构程序,该拉格朗日量包含任意二阶项和四阶项的函数.结果表明,具有最小耦合的模型没有de Sitter解,对于任何非平凡的二阶项的功能。为了得到de Sitter解,我们研究了一个非极小耦合的杨-米尔斯场引力模型。结果表明,即使在没有宇宙学常数项的情况下,具有非最小耦合的模型实际上也有de Sitter解。

英文摘要:

Cosmological models with an SU(2) Yang-Mills field are studied. For a specific model with a minimally coupled Yang-Mills Lagrangian, which includes an arbitrary function of the second-order term and a fourth-order term, a corresponding reconstruction program is proposed. It is shown that the model with minimal coupling has no de Sitter solutions, for any nontrivial function of the second-order term. To get de Sitter solutions, a gravitational model with nonminimally coupled Yang-Mills fields is then investigated. It is shown that the model with non-minimal coupling has in fact a de Sitter solution, even in absence of the cosmological constant term.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑