发表机构
Università di Genova; INFN Sezione di Genova; GNFM, Istituto Nazionale di Alta Matematica(热那亚大学; 意大利国家核物理研究所热那亚分部; 意大利高等数学国立研究所)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
该研究在1+1+2协变形式下,对LRS III时空中极形式自引力狄拉克场的协变场方程进行相空间分析,发现其宇宙学演化渐近收敛至收缩的Bianchi I时空,结论获数值积分支持。
AI 中文摘要
在1+1+2协变形式框架下,我们研究由极形式自引力狄拉克场源产生的局部旋转对称(LRS)III类时空。通过将协变场方程重写为自治动力学系统,我们对其解进行相空间分析,结果表明宇宙学演化渐近收敛至收缩的Bianchi I时空,该结论也得到了系统数值积分的支持。
英文摘要
Within the $1+1+2$ covariant formalism, we investigate Locally Rotationally Symmetric (LRS) class III spacetimes sourced by a self-gravitating Dirac field expressed in polar form. By recasting the covariant field equations into an autonomous dynamical system, we perform a phase-space analysis of their solutions. We show that the cosmological evolution asymptotically converges to a contracting Bianchi I spacetime, a result also supported by numerical integrations of the system.
Comments7 pages, 6 figures