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arXiv 1902.04142hep-th
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可积非对称$λ$ -形变

Integrable asymmetric $λ$-deformations

Sibylle Driezen, Alexander Sevrin, Daniel C. Thompson

摘要:

我们构造了非对称规范WZW模型的$λ$型可积变形。这是通过修改Sfetsos测量程序来实现的,以考虑$G/G$模型中允许的可能的自同构。我们验证了经典的可积性,导出了变形参数的单圈β函数,并给出了这些模型中可积D-膜组态的构造。作为一个应用程序,我们详细的情况下,$λ$ -变形的雪茄的几何形状对应的轴向规范$SL(2,R)/U(1)$理论在大$k$。在这里,我们还展示了一系列的A-型和B-型可积性保持D-膜配置。

英文摘要:

We construct integrable deformations of the $λ$-type for asymmetrically gauged WZW models. This is achieved by a modification of the Sfetsos gauging procedure to account for a possible automorphism that is allowed in $G/G$ models. We verify classical integrability, derive the one-loop beta function for the deformation parameter and give the construction of integrable D-brane configurations in these models. As an application, we detail the case of the $λ$-deformation of the cigar geometry corresponding to the axial gauged $SL(2,R)/U(1)$ theory at large $k$. Here we also exhibit a range of both A-type and B-type integrability preserving D-brane configurations.

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