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arXiv 1005.2117hep-th
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超对称陪集模型中的D-膜与矩阵分解

D-branes and matrix factorisations in supersymmetric coset models

Nicolas Behr, Stefan Fredenhagen

摘要:

矩阵分解描述了N=2超对称Landau-Ginzburg模型中的B型边界条件。在红外固定点处,它们对应于超共形边界态。研究了Grassmannian Kazama-Suzuki陪集模型中边界态与矩阵分解的关系。对于第一个非最小级数,即SU(3)_k/U(2)型模型,我们确定了最大对称边界态子集的矩阵分解。这个集合为RR电荷晶格提供了基础,并且可以用来通过快子凝聚产生(大概是所有)其他边界态。

英文摘要:

Matrix factorisations describe B-type boundary conditions in N=2 supersymmetric Landau-Ginzburg models. At the infrared fixed point, they correspond to superconformal boundary states. We investigate the relation between boundary states and matrix factorisations in the Grassmannian Kazama-Suzuki coset models. For the first non-minimal series, i.e. for the models of type SU(3)_k/U(2), we identify matrix factorisations for a subset of the maximally symmetric boundary states. This set provides a basis for the RR charge lattice, and can be used to generate (presumably all) other boundary states by tachyon condensation.

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