On the vacua of N=8 gauged supergravity in 4 dimensions

On the vacua of N=8 gauged supergravity in 4 dimensions
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关于 N=8 4 维超重力的真空

DOI:
10.1016/j.nuclphysb.2012.01.023
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发表时间:
2011
期刊:
Nuclear Physics
影响因子:
--
通讯作者:
G. Inverso
G. Inverso
中科院分区:
--
文献类型:
--
作者:
G. DallʼAgata;G. Inverso

文献摘要

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我们讨论了一个简单的程序来寻找真空的规范超引力模型,嵌入张量的变化,而不是直接最小化的标量位的基础上。我们把这个过程应用到N=8的四维规范超引力中。我们很容易地恢复了许多以前已知的真空,也完成了他们的标量质谱,我们应用我们的程序,以找到一打新的分析真空解决方案。分析表明,这些真空的模空间上的一个有趣的结构,并提供了新的标准来确定宇宙常数的期望值通过一个简单的检查组属性的嵌入张量。
We discuss a simple procedure for finding vacua of gauged supergravity models, based on the variation of the embedding tensor rather than on a direct minimization of the scalar potential. We apply this procedure to N=8 gauged supergravity in 4 dimensions. We easily recover many of the previously known vacua, also completing their scalar mass spectrum, and we apply our procedure to find a dozen of new analytical vacuum solutions. The analysis shows an interesting structure on the moduli spaces of these vacua and provides new criteria to determine the expected value of the cosmological constant by a simple inspection of the group properties of the embedding tensor.