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arXiv 1608.08504hep-th
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Abel Yang-Baxter形变和TsT变换

Abelian Yang-Baxter Deformations and TsT transformations

David Osten, Stijn J. van Tongeren

摘要:

我们证明了超弦陪集西格玛模型的交换杨-巴克斯特变形等价于交换TsT变换序列,即T对偶和坐标移位.我们的结果也推广到了费米子形变和费米子T对偶,并自然地导出了超对偶群OSp(d_b,d_b)的TsT子群|2d_f)。在像AdS_5 × S^5这样的情况下,费米子形变必然导致复杂的模型。作为不等价变形的一个例子,我们给出了AdS_3的全部六种阿贝尔变形.我们评论可能的双场论解释这些(超)TsT模型。

英文摘要:

We prove that abelian Yang-Baxter deformations of superstring coset sigma models are equivalent to sequences of commuting TsT transformations, meaning T dualities and coordinate shifts. Our results extend also to fermionic deformations and fermionic T duality, and naturally lead to a TsT subgroup of the superduality group OSp(d_b,d_b|2d_f). In cases like AdS_5 x S^5, fermionic deformations necessarily lead to complex models. As an illustration of inequivalent deformations, we give all six abelian deformations of AdS_3. We comment on the possible dual field theory interpretation of these (super-)TsT models.

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