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arXiv 1607.02869gr-qchep-th
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$κ$ -形变Minkowski时空中散射问题的某些特征

Some Features of Scattering Problem in a $κ$-Deformed Minkowski Spacetime

Mohsen Khodadi, Kourosh Nozari

摘要:

为了在狭义相对论中引入一个与狭义相对论无关的长度尺度,提出了双狭义相对论(DSR)理论。马盖约-斯莫林的DSR建议可以通过一种特殊形式的非对易时空(称为$κ$ -闵可夫斯基时空)来实现,在这种时空中洛伦兹对称性得以保持。在这个框架中,NC参数$κ$提供了自然截止能量尺度的起源。利用非线性形变相对论色散关系和洛伦兹变换,研究了$κ$ -Minkowski时空中两体碰撞问题(不产生新粒子)的一些唯象问题.通过处理弹性散射问题,我们研究了普朗克尺度能量截断对该散射问题的相对论运动学性质的影响。结果是具有挑战性的,因为一旦我们打开$κ$ -时空扩展,两体碰撞的性质就会从弹性变为非弹性。结果还表明,在洛伦兹变换的非线性表象序列下,重离子碰撞中一个重要的运动学变量--快度本质上不是一个可加量.

英文摘要:

The doubly special relativity (DSR) theories are suggested in order to incorporate an observer-independent length scale in special theory of relativity. The Magueijo-Smolin proposal of DSR is realizable through a particular form of the noncommutative (NC) spacetime (known as $κ$-Minkowski spacetime) in which the Lorentz symmetry is preserved. In this framework, the NC parameter $κ$ provides the origin of natural cutoff energy scale. Using a nonlinear deformed relativistic dispersion relation along with the Lorentz transformations, we investigate some phenomenological facets of two-body collision problem (without creation of new particles) in a $κ$-Minkowski spacetime. By treating an elastic scattering problem, we study effects of the Planck scale energy cutoff on some relativistic kinematical properties of this scattering problem. The results are challenging in the sense that as soon as one turns on the $κ$-spacetime extension, the nature of the two-body collision alters from elastic to inelastic one. It is shown also that a significant kinematical variable involving in heavy ion collisions, the rapidity, is not essentially an additive quantity under a sequence of the nonlinear representation of the Lorentz transformations.

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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