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arXiv 0810.1484hep-th
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半BPS超引力解与超代数

Half-BPS supergravity solutions and superalgebras

Eric D'Hoker, John Estes, Michael Gutperle, Darya Krym, Paul Sorba

摘要:

我们建立了某些李超代数与16个费米子发电机,半BPS解决方案的超引力与32个超对称之间的对应关系。三个案例进行了讨论。对于IIB型超引力,我们将半单李超代数H与PSU(2,2)的16个费米子生成元联系起来|4),半BPS解的家庭,这是不变的H下,局部渐近AdS_5 × S^5。类似地,对于M-理论,我们将半单李超代数H与16个费米子生成元联系起来,这些生成元是OSp(8^*)的子代数。|4)或OSp(8| 4,R)推广到半BPS解族,它们在H下是不变的,并且分别局部渐近于AdS_7 × S^4或AdS_4 × S^7.可能的增强超过16个超对称,如24,也进行了分析。PSU(2,2)的半单子代数的分类|4),OSp(8^*| 4)和OSp(8)|4,R)的结果,使我们猜想IIB型超引力和M-理论的各种新的半BPS解族的存在性。

英文摘要:

We establish a correspondence between certain Lie superalgebras with 16 fermionic generators, and half-BPS solutions to supergravities with 32 supersymmetries. Three cases are discussed. For Type IIB supergravity, we relate semi-simple Lie superalgebras H with 16 fermionic generators which are subalgebras of PSU(2,2|4), to families of half-BPS solutions which are invariant under H, and locally asymptotic to AdS_5 x S^5. Similarly, for M-theory, we relate semi-simple Lie superalgebras H with 16 fermionic generators which are subalgebras of OSp(8^*|4) or OSp(8|4,R) to families of half-BPS solutions which are invariant under H, and locally asymptotic to AdS_7 x S^4 or AdS_4 x S^7 respectively. Possible enhancements to more than 16 supersymmetries, such as 24, are also analyzed. The classification of semi-simple subalgebras of PSU(2,2|4), OSp(8^*|4), and OSp(8|4,R) derived in this paper, leads us to conjecture the existence of various new families of half-BPS solutions to Type IIB supergravity and M-theory.

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