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arXiv 1807.07673hep-th
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一个新的AdS-Lorentz超代数在D=4超引力中的广义宇宙学项

Generalized cosmological term in D=4 supergravity from a new AdS-Lorentz superalgebra

Diego M. Peñafiel, Lucrezia Ravera

摘要:

给出了AdS-Lorentz代数的一个新的超对称化。它涉及两个费米子生成元,通过对超代数osp(4)进行交换半群展开而得到|1)。利用上述展开方法的特殊性质,仅从新超代数的曲率出发,以几何方式构造了一个包含广义超对称宇宙项的D=4超引力作用量.用这种方法得到的作用量是类麦克道尔-曼德尔作用量。分析了作用量的规范不变性和超对称性。

英文摘要:

A new supersymmetrization of the so-called AdS-Lorentz algebra is presented. It involves two fermionic generators and is obtained by performing an abelian semigroup expansion of the superalgebra osp(4|1). The peculiar properties of the aforesaid expansion method are then exploited to construct a D=4 supergravity action involving a generalized supersymmetric cosmological term in a geometric way, only from the curvatures of the novel superalgebra. The action obtained with this procedure is a MacDowell-Mansouri like action. Gauge invariance and supersymmetry of the action are also analyzed.

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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