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arXiv 1306.2996hep-th
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双狭义相对论Snyder基中多粒子的五维透视

A Five Dimensional Perspective on Many Particles in the Snyder basis of Double Special Relativity

J. M. Lorenzi, R. Montemayor, L. F. Urrutia

摘要:

在简要介绍了双狭义相对论(DSR)的基础上,重点介绍了一个五维的方法,即通过哈密顿方法在相应的四维相空间中引入坐标和动量。对于一个粒子的情况,出发点是一个5维的德西特动量空间,并选择一个额外的约束来恢复4维的质量壳条件。通过选择特定的量规来定义减少的四维自由度,可以恢复DSR的不同基础。这是在一个粒子的情况下的斯奈德基础。我们推广的方法,许多粒子的情况下,并再次将其应用到这个基础。我们表明,系统的能量和动量,由动力学变量,是在空间和时间的平移的发电机,并关闭庞加莱代数,是添加剂的幅度。由此可见,复合物体的静止能量(质量)没有上限,而单个粒子则有上限。

英文摘要:

After a brief summary of Double Special Relativity (DSR), we concentrate on a five dimensional procedure, which consistently introduce coordinates and momenta in the corresponding four-dimensional phase space, via a Hamiltonian approach. For the one particle case, the starting point is a de Sitter momentum space in five dimensions, with an additional constraint selected to recover the mass shell condition in four dimensions. Different basis of DSR can be recovered by selecting specific gauges to define the reduced four dimensional degrees of freedom. This is shown for the Snyder basis in the one particle case. We generalize the method to the many particles case and apply it again to this basis. We show that the energy and momentum of the system, given by the dynamical variables that are generators of translations in space and time and which close the Poincaré algebra, are additive magnitudes. From this it results that the rest energy (mass) of a composite object does not have an upper limit, as opposed to a single component particle which does.

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