变形Mixmaster宇宙中的混沌与时代结构
广义相对论与量子宇宙学
2026-05-13 v1 数学物理
math.MP
摘要
我们研究了在经典聚合化和广义不确定性原理(GUP)扰动的普朗克 brackets下,Bianchi IX(Mixmaster)宇宙动力学。从Misner哈密顿量出发,我们推导了两种修正下的有效运动方程,并分析了Kasner时代持续时间作为动力学行为的探针。我们的结果表明,GUP校正通常会缩短时代长度,导致更频繁的墙面碰撞,而聚合校正则延长时代并抑制连续的弹跳。至Leading order,两种修正的组合产生一个加法性偏移,将这两种趋势进行插值。虽然billiard图景仍然稳健,但Mixmaster混沌的强度对扰动参数敏感。这些结果说明普朗克尺度校正要么增强要么抑制宇宙学混沌,为探索早期宇宙动力学提供了受控框架。
引用
@article{arxiv.2605.12173,
title = {Chaos and epoch structure in the deformed Mixmaster universe},
author = {Babak Vakili},
journal= {arXiv preprint arXiv:2605.12173},
year = {2026}
}
备注
26 pages, 2 figures, to appear in IJGMMP, This is the second part of a two-part article, the first part of which, titled "Classical Polymerization of the Bianchi I Model with Deformed Poisson Structure" has already been uploaded to the arXiv with ID number: 2510.06628 [gr-qc]