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arXiv · hep-th/0212198

Two-Loop Superstrings in Hyperelliptic Language II: the Vanishing of the Cosmological Constant and the Non-Renormalization Theorem

Zhu-Jun Zheng·Jun-Bao Wu·Chuan-Jie Zhu
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Abstract

The vanishing of the cosmological constant and the non-renormali-zation theorem are verified at two loops by explicit computation using the hyperelliptic language and the newly obtained chiral measure of D'Hoker and Phong. A set of identities is found which is used in the verification of the non-renormalization theorem and leads to a great simplification of the calculation of the four-particle amplitude at two loops.

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Zhu-Jun Zheng, Jun-Bao Wu, Chuan-Jie Zhu. 2003-01-02. Two-Loop Superstrings in Hyperelliptic Language II: the Vanishing of the Cosmological Constant and the Non-Renormalization Theorem. https://doi.org/10.1016/s0550-3213(03)00380-8

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