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arXiv 2102.09254hep-thgr-qc
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用Moyal积度量类高自旋对称性

Gauging the higher-spin-like symmetries by the Moyal product

Maro Cvitan, Predrag Dominis Prester, Stefano Giaccari, Mateo Paulišić, Ivan Vuković

摘要:

我们分析了一种新的方法来衡量刚性高导数(高自旋)对称性的自由相对论性的行动定义在平坦的时空,最初开发的形式主义的基础上Bonora等人。和Bekaert等人。在他们的研究线性耦合的物质场的无限高自旋场塔。离壳定义是基于定义在$2d$维主空间上的场,主空间具有辛结构,其中规范变换的无限维李代数由Moyal交换子给出。使用这个代数,我们构造定义良好的弱非局部行动,无论是在规范和物质部门,通过模仿杨米尔斯程序。该理论允许一个描述的一个无限塔的更高自旋时空场只在壳。有趣的是,欧几里德理论也允许这样的描述。由于其形式上的相似性,非交换场论,形式主义允许引入一个协变潜在的作用,广义维尔本。这种协变公式揭示了其他相的存在,并表明该理论可以写成矩阵模型的形式。理论的对称性进行了分析和守恒电流明确构建。通过研究自旋为2的扇区,我们表明,紧急几何是密切相关的telepallel几何,在这个意义上,诱导的线性连接是相反的Weitzenböck的。

英文摘要:

We analyze a novel approach to gauging rigid higher derivative (higher spin) symmetries of free relativistic actions defined on flat spacetime, building on the formalism originally developed by Bonora et al. and Bekaert et al. in their studies of linear coupling of matter fields to an infinite tower of higher spin fields. The off-shell definition is based on fields defined on a $2d$-dimensional master space equipped with a symplectic structure, where the infinite dimensional Lie algebra of gauge transformations is given by the Moyal commutator. Using this algebra we construct well-defined weakly non-local actions, both in the gauge and the matter sector, by mimicking the Yang-Mills procedure. The theory allows for a description in terms of an infinite tower of higher spin spacetime fields only on-shell. Interestingly, Euclidean theory allows for such a description also off-shell. Owing to its formal similarity to non-commutative field theories, the formalism allows for the introduction of a covariant potential which plays the role of the generalised vielbein. This covariant formulation uncovers the existence of other phases and shows that the theory can be written in a matrix model form. The symmetries of the theory are analyzed and conserved currents are explicitly constructed. By studying the spin-2 sector we show that the emergent geometry is closely related to teleparallel geometry, in the sense that the induced linear connection is opposite to Weitzenböck's.

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