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arXiv 0808.0282hep-th
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AdS(5)中纯旋量超弦的量子可积性问题xS(5)

Aspects of quantum integrability for pure spinor superstring in AdS(5)xS(5)

Valentina Giangreco M. Puletti

摘要:

我们考虑了$AdS_5\times S^5$上的纯旋量IIB超弦在强耦合下首阶的单值矩阵,特别是它在无穷小和连续形变下的变化。这种变化相当于插入一个局部运算符。要求BRST-封闭这样一个操作排除了它的存在,这意味着单值矩阵保持轮廓独立的微扰理论中的一阶。此外,我们显式地计算对应于平面连接到领导阶的场强,并直接检查,它是免费的对数发散。单值矩阵的坐标变换无反常和曲率张量的UV有限性最终暗示了纯旋量超弦在一阶的可积性。

英文摘要:

We consider the monodromy matrix for the pure spinor IIB superstring on $AdS_5\times S^5$ at leading order at strong coupling, in particular its variation under an infinitesimal and continuous deformation of the contour. Such variation is equivalent to the insertion of a local operator. Demanding the BRST-closure for such an operator rules out its existence, implying that the monodromy matrix remains contour-independent at the first order in perturbation theory. Furthermore we explicitly compute the field strength corresponding to the flat connections up to leading order and directly check that it is free from logarithmic divergences. The absence of anomaly in the coordinate transformation of the monodromy matrix and the UV-finiteness of the curvature tensor finally imply the integrability of the pure spinor superstring at the first order.

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