Time-dependent solutions with null Killing spinor in M-theory and superstrings
Time-dependent solutions with null Killing spinor in M-theory and superstrings
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DOI：
10.1016/j.physletb.2005.09.080
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发表时间：
2005-09
影响因子：
4.4
通讯作者：
Takayuki Ishino;H. Kodama;N. Ohta
中科院分区：
文献类型：
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作者：
Takayuki Ishino;H. Kodama;N. Ohta
在所有度规和背景场强都是光锥坐标的函数的条件下，我们得到了D=11超引力中一般的1/2BPS解，并讨论了几个例子.特别地，我们证明了在弦标架中的平坦性的附加要求下，线性双光子背景是最一般的无背景超对称解。我们也给出了弦框架中R-R或NS-NS背景下平坦时空的最一般解，并且它们都是用一个函数来刻画的。
Imposing the condition that there should be a null Killing spinor with all the metrics and background field strengths being functions of the light-cone coordinates, we find general 1/2 BPS solutions in D=11 supergravity, and discuss several examples. In particular we show that the linear dilaton background is the most general supersymmetric solution without background under the additional requirement of flatness in the string frame. We also give the most general solutions for flat spacetime in the string frame with R–R or NS–NS backgrounds, and they are characterized by a single function.