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arXiv 0707.0922hep-th
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Landau-Ginzburg模型中的B型缺陷

B-type defects in Landau-Ginzburg models

Ilka Brunner, Daniel Roggenkamp

摘要:

我们考虑Landau-Ginzburg模型,可能不同的超势粘在一起沿一维缺陷线。保持B型超对称性的缺陷可以用超势差的矩阵分解来表示。在这个框架中描述了这些缺陷的组成及其对B型边界条件的作用。详细分析了超势W=X^d和W=X^d+Z^2的Landau-Ginzburg模型的情况,并将结果与这些Landau-Ginzburg模型在IR中流向的N=2超共形极小模型中缺陷的CFT处理进行了比较.

英文摘要:

We consider Landau-Ginzburg models with possibly different superpotentials glued together along one-dimensional defect lines. Defects preserving B-type supersymmetry can be represented by matrix factorisations of the difference of the superpotentials. The composition of these defects and their action on B-type boundary conditions is described in this framework. The cases of Landau-Ginzburg models with superpotential W=X^d and W=X^d+Z^2 are analysed in detail, and the results are compared to the CFT treatment of defects in N=2 superconformal minimal models to which these Landau-Ginzburg models flow in the IR.

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