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arXiv 1303.0195hep-th
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生活在弯曲的动量空间

Living in Curved Momentum Space

J. Kowalski-Glikman

摘要:

本文综述了动量空间非平凡几何情形下相对论粒子力学的某些方面。我们首先展示了弯曲的动量空间是如何在2+1维引力理论中与粒子耦合的,当引力的(拓扑)自由度被求解时。我们认为在3+1维空间中可能存在类似的量子引力拓扑相。然后,我们刻画了弯曲动量空间相互作用粒子理论的主要性质和作用量的对称性。我们讨论了时空图像和相对定域性原理的出现,根据该原理,事件的定域性不是绝对的,而是以可控的相对论方式依赖于观察者。最后,我们详细回顾了研究最多的卡帕-庞加莱框架,它对应于德西特动量空间。

英文摘要:

In this paper we review some aspects of relativistic particles' mechanics in the case of a non-trivial geometry of momentum space. We start with showing how the curved momentum space arises in the theory of gravity in 2+1 dimensions coupled to particles, when (topological) degrees of freedom of gravity are solved for. We argue that there might exist a similar topological phase of quantum gravity in 3+1 dimensions. Then we characterize the main properties of the theory of interacting particles with curved momentum space and the symmetries of the action. We discuss the spacetime picture and the emergence of the principle of relative locality, according to which locality of events is not absolute but becomes observer dependent, in the controllable, relativistic way. We conclude with the detailed review of the most studied kappa-Poincare framework, which corresponds to the de Sitter momentum space.

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。

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