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arXiv 1909.09173gr-qchep-th
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相对论弯曲动量空间中粒子的物理速度

Physical velocity of particles in relativistic curved momentum space

Salvatore Mignemi, Giacomo Rosati

摘要:

我们一般表明,对于弯曲动量空间的相对论理论,即~一种具有变形相对论对称性的理论,粒子的物理速度与它们的群速度一致。这澄清了一个长期存在的问题,即这种理论的坐标和群速度之间的差异。第一个证据表明,这是在线性顺序的变形参数在物理学文献B700(2011)150中获得的特定情况下的$κ$ -动量空间。证据是基于最近对相对位置如何影响这些场景的理解。我们在这里再次依赖于相对局域性效应的仔细实现,并获得变形/曲率参数中所有阶次的一般(相对论)弯曲动量空间框架的结果。我们还讨论了这个结果的有效性时,变形取决于坐标以及动量。

英文摘要:

We show in general that for a relativistic theory with curved momentum space, i.e.~a theory with deformed relativistic symmetries, the physical velocity of particles coincides with their group velocity. This clarifies a long-standing question about the discrepancy between coordinate and group velocity for this kind of theories. The first evidence that this was the case had been obtained at linear order in the deformation parameter in Phys.Lett.B700(2011)150 for the specific case of $κ$-momentum space. The proof was based on the recent understanding of how relative locality affects these scenarios. We here rely again on a careful implementation of relative locality effects, and obtain our result for a generic (relativistic) curved momentum space framework at all orders in the deformation/curvature parameter. We also discuss the validity of this result when the deformation depends on the coordinates as well as on the momenta.

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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