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arXiv 1104.0706hep-thmath-phmath.MP
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Pohlmeyer约化AdS_n x S^n超弦的世界表超对称性

Worldsheet Supersymmetry of Pohlmeyer-Reduced AdS_n x S^n Superstrings

M. Goykhman, E. Ivanov

摘要:

正如格里戈里耶夫和蔡特林所观察到的那样,波尔迈耶约化的AdS_2 x S^2超弦理论具有N=(2,2)世界片超对称性。在经典水平上,我们证明了Pohlmeyer约化形式的AdS_3 x S^3和AdS_5 x S^5超弦理论揭示了隐藏的N=(4,4)和N=(8,8)世界面超对称性。我们的考虑是基于超弦方程的修正质量变形规范WZW作用量。我们给出了离壳作用量和超弦方程的超对称变换的显式形式。这些变换的特征是存在非局部项。

英文摘要:

As was observed by Grigoriev and Tseytlin, the Pohlmeyer-reduced AdS_2 x S^2 superstring theory possesses N=(2,2) worldsheet supersymmetry. We show, at the classical level, that the AdS_3 x S^3 and AdS_5 x S^5 superstring theories in the Pohlmeyer-reduced form reveal hidden N=(4,4) and N=(8,8) worldsheet supersymmetries. Our consideration is based on the modified mass-deformed gauged WZW action for the superstring equations. We present the explicit form of the supersymmetry transformations for both the off-shell action and the superstring equations. The characteristic feature of these transformations is the presence of non-local terms.

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