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arXiv 1706.08158hep-th
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AdS中的一个极小纯旋量西格玛模型

A minimalistic pure spinor sigma-model in AdS

Andrei Mikhailov

摘要:

一般弯曲背景下纯旋量形式的$b$ -鬼不是全纯的。对于这样的理论,弦测度的构造需要知道BV相空间上的超同态的作用。我们在$AdS_5\times S^5$中对纯旋量西格玛模型构造了这样一个作用量。从BV形式主义的观点来看,这个西格玛模型属于这样一类理论,其中主作用在反场中的扩展终止于二次阶。我们表明,它可以减少到一个更简单的退化西格玛模型,保持AdS对称性。我们构造了世界片向量场代数在这个最小西格玛模型的BV相空间上的作用,并解释了如何将它提升到原始模型。

英文摘要:

The $b$-ghost of the pure spinor formalism in a general curved background is not holomorphic. For such theories, the construction of the string measure requires the knowledge of the action of diffeomorphisms on the BV phase space. We construct such an action for the pure spinor sigma-model in $AdS_5\times S^5$. From the point of view of the BV formalism, this sigma-model belongs to the class of theories where the expansion of the Master Action in antifields terminates at the quadratic order. We show that it can be reduced to a simpler degenerate sigma-model, preserving the AdS symmetries. We construct the action of the algebra of worldsheet vector fields on the BV phase space of this minimalistic sigma-model, and explain how to lift it to the original model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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