论文标题
纯ds超级强度
Unimodular vs Nilpotent Superfield Approach to Pure dS Supergravity
论文作者
论文摘要
在超级和弦理论中了解保姆时空方面的最新进展导致了四维超级重力的发展，并自发损坏的超对称性允许Sitter Vacua，也称为De Sitter Supergravity。一种方法利用了受约束的（尼罗替体）的超级场地，而另一种方法是伴侣与沃尔科夫 - 科洛夫·戈德斯蒂诺（Volkov-Akulov-Akulov Goldstino）动作的局部超对称概括的伴侣。这两种方法已被证明引起了相同的4D动作。一种新的Sitter真空吸尘器的新方法涉及使用Super-Stückelberg机制将单模型重力概括为超级重力。在本文中，我们在这种新方法与前两种之间建立了联系，这些方法是在Nilpotent Superfields和Goldstino Brane的背景下进行的。我们表明，在适当的字段重新定义时，4D动作匹配了该场中的立方顺序。这指出了可能存在更一般的框架，以从高能理论中获得DE STAITER的空间。
Recent progress in understanding de Sitter spacetime in supergravity and string theory has led to the development of a four dimensional supergravity with spontaneously broken supersymmetry allowing for de Sitter vacua, also called de Sitter supergravity. One approach makes use of constrained (nilpotent) superfields, while an alternative one couples supergravity to a locally supersymmetric generalization of the Volkov-Akulov goldstino action. These two approaches have been shown to give rise to the same 4D action. A novel approach to de Sitter vacua in supergravity involves the generalisation of unimodular gravity to supergravity using a super-Stückelberg mechanism. In this paper, we make a connection between this new approach and the previous two which are in the context of nilpotent superfields and the goldstino brane. We show that upon appropriate field redefinitions, the 4D actions match up to the cubic order in the fields. This points at the possible existence of a more general framework to obtain de Sitter spacetimes from high-energy theories.
