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arXiv 1806.05945hep-th
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陈-西蒙斯或拉瑞塔-施温格能成为阿库洛夫-戈德斯通吗?

Can Chern-Simons or Rarita-Schwinger be a Volkov-Akulov Goldstone?

Sukruti Bansal, Dmitri Sorokin

摘要:

我们研究了三维非线性模型的矢量和矢量旋量戈德斯通领域与自发破缺的某些更高的自旋对应的超对称性的拉格朗日是一个pastov-Akulov型。这些模型中的Goldstone场在自发破缺的刚性对称下发生非线性变换。我们发现,在向量Goldstone模型的作用量的主导项是阿贝尔的陈-西蒙斯作用量,其规范对称性被一个四次项破缺。因此,该模型具有传播自由度,在解耦极限下,该自由度是四次Galileon标量场。矢量旋量goldstino模型被证明是三维拉里塔-施温格作用量的非线性推广。与矢量戈德斯通的情况相反,这种非线性模型保留了拉丽塔-施温格作用量的规范对称性,并最终通过非线性场的重新定义而还原为后者。因此,我们发现,自由的Rarita-Schwinger作用是不变的下,一个隐藏的刚性超对称性产生的费米子矢量旋量算子和非线性作用在Rarita-Schwinger goldstino。

英文摘要:

We study three-dimensional non-linear models of vector and vector-spinor Goldstone fields associated with the spontaneous breaking of certain higher-spin counterparts of supersymmetry whose Lagrangians are of a Volkov-Akulov type. Goldstone fields in these models transform non-linearly under the spontaneously broken rigid symmetries. We find that the leading term in the action of the vector Goldstone model is the Abelian Chern-Simons action whose gauge symmetry is broken by a quartic term. As a result, the model has a propagating degree of freedom which, in a decoupling limit, is a quartic Galileon scalar field. The vector-spinor goldstino model turns out to be a non-linear generalization of the three-dimensional Rarita-Schwinger action. In contrast to the vector Goldstone case, this non-linear model retains the gauge symmetry of the Rarita-Schwinger action and eventually reduces to the latter by a non-linear field redefinition. We thus find that the free Rarita-Schwinger action is invariant under a hidden rigid supersymmetry generated by fermionic vector-spinor operators and acting non-linearly on the Rarita-Schwinger goldstino.

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