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arXiv 1209.6065hep-thgr-qc
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四维离壳曲率平方超引力场的超对称解

Supersymmetric Solutions in Four-Dimensional Off-Shell Curvature-Squared Supergravity

Hai-Shan Liu, Hong Lu, Yi Pang, C. N. Pope

摘要:

超引力的离壳公式允许人们添加封闭形式的高导数超不变量,这些超不变量与通常的低导数作用量分别是超对称的。本文研究了四维离壳N = 1超引力,其中包含了与Weyl张量平方和Ricci标量平方相关的额外超不变量。我们得到各种解决方案的度量描述域壁,Lifshitz几何形状,也解决方案的一种被称为回旋子。我们发现,在某些情况下,解决方案可以是超对称的适当选择的参数。在某些解决方案中,辅助场可以是虚的。人们可以将这些重新解释为解析连续理论中的真实解。由于超对称性变换规则现在要求引力子是复杂的,解析连续理论有一个“假的超对称性”,而不是真正的超对称性。然而,伪超对称解的概念是有用的,因为Killing旋量方程提供了玻色子场的一阶方程。

英文摘要:

Off-shell formulations of supergravities allow one to add closed-form higher-derivative super-invariants that are separately supersymmetric to the usual lower-derivative actions. In this paper we study four-dimensional off-shell N=1 supergravity where additional super-invariants associated with the square of the Weyl tensor and the square of the Ricci scalar are included. We obtain a variety of solutions where the metric describes domain walls, Lifshitz geometries, and also solutions of a kind known as gyratons. We find that in some cases the solutions can be supersymmetric for appropriate choices of the parameters. In some solutions the auxiliary fields may be imaginary. One may reinterpret these as real solutions in an analytically-continued theory. Since the supersymmetry transformation rules now require the gravitino to be complex, the analytically-continued theory has a "fake supersymmetry" rather than a genuine supersymmetry. Nevertheless, the concept of pseudo-supersymmetric solutions is a useful one, since the Killing spinor equations provide first-order equations for the bosonic fields.

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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