变形狭义相对论中的经典定域性佯谬及其可能的量子解决
Classical paradoxes of locality and their possible quantum resolutions in deformed special relativity
摘要：
在变形或双狭义相对论（DSR）中，洛仑兹群对动量本征态的作用被变形，以保持最大动量或最小长度，假设等于普朗克长度。讨论了粒子在Kappa-Minkowski时空中传播的经典和量子动力学，以考察经典动力学中出现的一个明显的定域性佯谬。这是因为粒子的时空位置的洛伦兹变换取决于它们的能量，因此由两个或多个粒子的重合定义的局部事件是否发生似乎取决于观察者的参照系。在这里，它提出的悖论只出现在经典的图片，并可能解决时，考虑到量子动力学。如果是这样的话，明显的悖论就会出现，因为研究普朗克常数为零但普朗克长度不为零的物理学是不一致的。这可能是相关的现象学，如观察费米，因为在领先的顺序有一个直接和随机依赖的到达时间的能量，由于额外的传播波包。
英文摘要：
In deformed or doubly special relativity (DSR) the action of the lorentz group on momentum eigenstates is deformed to preserve a maximal momenta or minimal length, supposed equal to the Planck length. The classical and quantum dynamics of a particle propagating in kappa-Minkowski spacetime is discussed in order to examine an apparent paradox of locality which arises in the classical dynamics. This is due to the fact that the Lorentz transformations of spacetime positions of particles depend on their energies, so whether or not a local event, defined by the coincidence of two or more particles, takes place appears to depend on the frame of reference of the observer. Here it is proposed that the paradox arises only in the classical picture, and may be resolved when the quantum dynamics is taken into account. If so, the apparent paradoxes arise because it is inconsistent to study physics in which Planck's constant is zero but the Planck length is non-vanishing. This may be relevant for phenomenology such as observations by FERMI, because at leading order there is both a direct and a stochastic dependence of arrival time on energy, due to an additional spreading of wavepackets.
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