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arXiv 1709.01448hep-th
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eta变形对称空间西格玛模型的Poisson-Lie变换

Poisson-Lie duals of the eta deformed symmetric space sigma model

Ben Hoare, Fiona K. Seibold

摘要:

利用Poisson-Lie对偶方法对G/H对称空间西格玛模型关于简单李群G的eta变形进行了研究,给出了相应的lambda变形模型的解析延拓.本文研究了eta变形模型关于G的子群G_0的对偶性。从复化群上的一阶作用出发,通过对不同子代数的自由度积分,我们发现当G_0与一个子Dynkin图相关联时,对偶是可能的。还可以包括从剩余的Cartan生成器构建的附加U_1因子。由此产生的建设统一的Poisson-Lie对偶关于G和完全阿贝尔对偶的eta变形在一个单一的框架,与集成代数么模在这两种情况下。我们推测,将这些结果推广到路径积分形式,可以解释为什么eta变形的AdS_5 × S^5超弦不是单圈Weyl不变量,即耦合解不了IIB型超引力方程,而它的完全交换对偶和lambda变形模型解了.

英文摘要:

Poisson-Lie dualising the eta deformation of the G/H symmetric space sigma model with respect to the simple Lie group G is conjectured to give an analytic continuation of the associated lambda deformed model. In this paper we investigate when the eta deformed model can be dualised with respect to a subgroup G_0 of G. Starting from the first-order action on the complexified group and integrating out the degrees of freedom associated to different subalgebras, we find it is possible to dualise when G_0 is associated to a sub-Dynkin diagram. Additional U_1 factors built from the remaining Cartan generators can also be included. The resulting construction unifies both the Poisson-Lie dual with respect to G and the complete abelian dual of the eta deformation in a single framework, with the integrated algebras unimodular in both cases. We speculate that extending these results to the path integral formalism may provide an explanation for why the eta deformed AdS_5 x S^5 superstring is not one-loop Weyl invariant, that is the couplings do not solve the equations of type IIB supergravity, yet its complete abelian dual and the lambda deformed model are.

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