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arXiv 1312.7410hep-thhep-ph
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引力介导的膜-膜超对称破缺的六维起源

Six-dimensional origin of gravity mediated brane to brane supersymmetry breaking

G. A. Diamandis, B. C. Georgalas, P. Kouroumalou, A. B. Lahanas

备注：
Comments added, appendix added, version to appear in Physical Review D
发表信息：
Phys. Rev. D 89, 085007 (2014)
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摘要：

四维超引力可能是描述低能粒子物理的正确框架。它与基础的弦论的联系可以通过具有特殊特征的高维超引力来实现。他们减少到四维打破了超对称性，其大小取决于紧化流形和产生破缺的机制。特别是紧化，特别是在$S_1/Z_2$轨道上，超对称性破缺发生在隐藏的膜上，位于$S_1/Z_2$的一端，通过在本体中传播的引力相互作用，传递到位于另一端的可见膜。这种情况已经在$N=2$、$D=5$超引力的框架中举例说明。本文从超引力理论的六维描述出发，研究了$N=2$，$D=5$超引力理论，认为它起源于一个除了引力之外还包含了若干张量多重态的$D=6$超引力。这以两步的方式还原为$N=1$，$D=4$超引力，首先是卡鲁扎-克莱因还原，然后是$S_1/Z_2$ orbifold紧化。由此产生的理论有惊人的相似之处，从一个单一的独立的$N=2$，$D=5$超引力，没有提到潜在的高维$D=6$超引力，和一个结构，使超对称性破缺机制研究在过去很容易纳入高维计划。

英文摘要：

Four dimensional supergravities may be the right framework to describe particle physics at low energies. Its connection to the underlying string theory can be implemented through higher dimensional supergravities which bear special characteristics. Their reduction to four dimensions breaks supersymmetry whose magnitude depends both on the compactifying manifold and the mechanism that generates the breaking. In particular compactifications, notably on a $S_1/Z_2$ orbifold, the breaking of supersymmetry occuring on a hidden brane, residing at one end of $S_1/Z_2$, is communicated to the visible brane which lies at the other end, via gravitational interactions propagating in the bulk. This scenario has been exemplified in the framework of the $N=2$, $D=5$ supergravity. In this note, motivated by the recent developments in the field, related to the six-dimensional description of the supergravity theory, we study the $N=2$, $D=5$ supergravity theory as originating from a $D=6$ supergravity which, in addition to the gravity, includes a number of tensor multiplets. This reduces to $N=1$, $D=4$ supergravity in a two step manner, first by Kaluza-Klein reduction followed by a $S_1/Z_2$ orbifold compactification. The resulting theory has striking similarities with the one that follows from the single standalone $N=2$, $D=5$ supergravity, with no reference to the underlying higher dimensional $D=6$ supergravity, and a structure that makes the supersymmetry breaking mechanisms studied in the past easily incorporated in higher dimensional schemes.

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