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arXiv 0710.0709hep-th
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IIB型矩阵模型中的超弦顶点算子

Superstring vertex operators in type IIB matrix model

Yoshihisa Kitazawa, Satoshi Nagaoka

摘要:

阐明了IIB型矩阵模型中的顶点算子与超弦的关系。在二维非对易背景下,利用IIB矩阵模型得到了Green-Schwarz光锥闭超弦理论。通过这种联系,超弦顶点算符可以从IIB矩阵模型的顶点算符中复制出来.实际上,我们证实了二维背景下IIB矩阵模型中的超引力顶点算符约化为超弦理论中的超引力顶点算符。非对易性在我们的识别中起着重要的作用。通过这种对应,我们可以从IIB矩阵模型中再现超弦散射振幅。

英文摘要:

We clarify the relation between the vertex operators in type IIB matrix model and superstring. Green-Schwarz light-cone closed superstring theory is obtained from IIB matrix model on two dimensional noncommutative backgrounds. Superstring vertex operators should be reproduced from those of IIB matrix model through this connection. Indeed, we confirm that supergravity vertex operators in IIB matrix model on the two dimensional backgrounds reduce to those in superstring theory. Noncommutativity plays an important role in our identification. Through this correspondence, we can reproduce superstring scattering amplitudes from IIB matrix model.

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