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arXiv 1012.5133hep-thastro-ph.HEgr-qcmath-phmath.MP
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量子理论、非对易性与启发式

Quantum Theory, Noncommutativity and Heuristics

Earnest Akofor

摘要:

非对易场论是一类超越基本粒子物理标准模型的理论。它们的重要性可以概括为两个事实。首先,作为非对易时空上的场论,它们具有自然的正则化参数。其次,它们与量子引力理论有着天然的联系,而量子引力理论通常会产生非对易时空。因此,非对易场论可以阐明量子化引力的问题。非对易场论的一个吸引人的方面是,它们可以用公式表示,以保持时空对称性,避免引入无关的自由度,因此它们提供了相容的基本理论模型。在这些笔记中,我们回顾非对易场论在最简单的非对易时空Moyal平面上对称性方面的表述。我们讨论违反洛伦兹,P,CP,PT和CPT对称性以及因果关系。还提出了这些违规行为的一些实验可检测的特征,涉及早期宇宙的普朗克尺度物理和线性响应有限温度场论。

英文摘要:

Noncommutative field theories are a class of theories beyond the standard model of elementary particle physics. Their importance may be summarized in two facts. Firstly as field theories on noncommutative spacetimes they come with natural regularization parameters. Secondly they are related in a natural way to theories of quantum gravity which typically give rise to noncommutative spacetimes. Therefore noncommutative field theories can shed light on the problem of quantizing gravity. An attractive aspect of noncommutative field theories is that they can be formulated so as to preserve spacetime symmetries and to avoid the introduction of irrelevant degrees freedom and so they provide models of consistent fundamental theories. In these notes we review the formulation of symmetry aspects of noncommutative field theories on the simplest type of noncommutative spacetime, the Moyal plane. We discuss violations of Lorentz, P, CP, PT and CPT symmetries as well as causality. Some experimentally detectable signatures of these violations involving Planck scale physics of the early universe and linear response finite temperature field theory are also presented.

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