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arXiv 0901.0953hep-th
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IIB型矩阵模型顶点算子的圆盘振幅计算

Vertex operators of Type IIB matrix model via calculation of disk amplitudes

Yoshihisa Kitazawa, Toshikazu Negi

摘要:

利用共形场论方法,通过计算圆盘振幅,研究了IIB(IKKT)矩阵模型中超引力多重态的顶点算符。IIB矩阵模型的顶点算子是由D(-1)-膜的存在性引入的闭弦与开弦的耦合。我们考虑最一般的耦合,其中涉及玻色子和费米开弦。我们的结果与以前基于超对称性的结果是一致的。从而从第一性原理出发确定了IIB矩阵模型顶点算子的结构。

英文摘要:

We investigate the vertex operators of the supergravity multiplet in IIB(IKKT) matrix model by calculating the disk amplitudes, exploiting the technique of conformal field theory. The vertex operators of IIB matrix model are given as the coupling of a closed string and open strings which are introduced by the existence of D(-1)-branes. We consider the most generic couplings which involve both the bosonic and fermionic open strings. Our results are consistent with the previous results based on supersymmetry. We thus confirm the structure of the IIB matrix model vertex operators from the first principle.

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