非对易Mixmaster宇宙学
Noncommutative Mixmaster Cosmologies
摘要:
本文研究了各向异性宇宙学中经典混合主宇宙模型的一个变体,其中空间截面是非对易的3-环面。我们考虑的方式,描述混合动力学的离散动力系统可以扩展到作用于非交换环面模,以及如何产生的动态不同于经典的,例如,在外观的异国情调的光滑结构。我们讨论的光谱行动的性质,重点是如何慢滚通货膨胀潜力确定的光谱行动影响的mixmaster动态。我们与其他最近的光谱行动计算结果的模型,我们确定其他物理环境中,该模型可能是相关的。
英文摘要:
In this paper we investigate a variant of the classical mixmaster universe model of anisotropic cosmology, where the spatial sections are noncommutative 3-tori. We consider ways in which the discrete dynamical system describing the mixmaster dynamics can be extended to act on the noncommutative torus moduli, and how the resulting dynamics differs from the classical one, for example, in the appearance of exotic smooth structures. We discuss properties of the spectral action, focussing on how the slow-roll inflation potential determined by the spectral action affects the mixmaster dynamics. We relate the model to other recent results on spectral action computation and we identify other physical contexts in which this model may be relevant.
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