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arXiv 1209.1845hep-th
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具有$D(2, 1; c'; 0)^2$对称性的M理论中精确半BPS通量解:局部解

Exact Half-BPS Flux Solutions in M-theory with $D(2, 1; c'; 0)^2$ Symmetry: Local Solutions

John Estes, Roman Feldman, Darya Krym

摘要:

我们构造了11维超引力(或M理论)的局部解,这些解在超代数$D(2, 1; c'; 0)\oplus D(2, 1; c'; 0)$下对参数$c'$的所有值都是不变的。将BPS约束归结为复变函数$G$上的单个线性偏微分方程。PDE在0806.0605中求解,模应用边界和正则性条件。解的物理场由$c'$、调和函数$h$和复函数$G$确定。$ h$和$G$都是二维紧致黎曼流形上的函数。可自由选择调和函数$ h$。我们得到的度量和磁场强度的$G$,$h$和$c'$方面的表达式,并表明,这些确实是有效的解决方案的爱因斯坦,麦克斯韦和Bianchi方程。最后给出了$AdS_7 \times S^4$和$AdS_4 \times S^7$作为$c'$函数的单参数形变的构造。

英文摘要:

We construct local solutions to 11-dimensional supergravity (or M-theory), which are invariant under the superalgebra $D(2, 1; c'; 0)\oplus D(2, 1; c'; 0)$ for all values of the parameter $c'$. The BPS constraints are reduced to a single linear PDE on a complex function $G$. The PDE was solved in 0806.0605 modulo application of boundary and regularity conditions. The physical fields of the solutions are determined by $c'$, a harmonic function $h$, and the complex function $G$. $ h$ and $G$ are both functions on a 2-dimensional compact Riemannian manifold. The harmonic function $ h$ is freely chosen. We obtain the expressions for the metric and the field strength in terms of $G$, $h$, and $c'$ and show that these are indeed valid solutions of the Einstein, Maxwell, and Bianchi equations. Finally we give a construction of one parameter deformations of $AdS_7 \times S^4$ and $AdS_4 \times S^7$ as a function of $c'$.

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