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arXiv 0802.0070math-phmath.MP
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相对论性相空间中庞加莱群的表示

Representations of the Poincare group on relativistic phase space

Yaakov Friedman

摘要:

我们引入一个复相对论相空间作为空间$\mathbb{C}^4$,该空间具有Minkowski度量和几何三重积,几何三重积类似于Cartan分类中IV型有界对称域的三重积,称为自旋域.我们定义了一个自旋1表示的李代数的庞加莱群的自然运营商的三个产品在复杂的相对论性相空间。这个表示与电磁张量有关。利用复Faraday电磁张量构造了复相对论相空间上的自旋1/2表示。我们证明了相空间的Newman-Penrose基决定了这种表示下的Dirac双旋量。值得注意的是,三积表示只允许自旋1和自旋1/2表示,这对应于大多数自然粒子。

英文摘要:

We introduce a complex relativistic phase space as the space $\mathbb{C}^4$ equipped with the Minkowski metric and with a geometric tri-product on it. The geometric tri-product is similar to the triple product of the bounded symmetric domain of type IV in Cartan's classification, called the spin domain. We define a spin 1 representations of the Lie algebra of the Poincaré group by natural operators of this tri-product on the complex relativistic phase space. This representation is connected with the electromagnetic tensor. A spin 1/2 representation on the complex relativistic phase space is constructed be use of the complex Faraday electromagnetic tensor. We show that the Newman-Penrose basis for the phase space determines the Dirac bi-spinors under this representation. Quite remarkable that the tri-product representation admits only spin 1 and spin 1/2 representations which correspond to most particles of nature.

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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