Pure spinor formalism as an N=2 topological string
Pure spinor formalism as an N=2 topological string
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作为 N=2 拓扑弦的纯旋量形式
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
N. Berkovits
中科院分区：
文献类型：
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作者：
N. Berkovits
根据Nekrasov和Siegel的建议，一个非最小的场集合被添加到超弦的纯旋量形式中。扭曲的π = 3 N = 2生成器，然后构造纯旋量BRST运营商是费米子自旋1生成器，和形式主义被解释为一个临界拓扑弦。这个拓扑弦理论的三个应用包括：无图像变换算子的多圈超弦振幅的超庞加莱协变计算，无接触项问题的立方开超弦场论的构建，以及计算时空作用中F项的纯旋量形式主义的一个新的四维版本。
Following suggestions of Nekrasov and Siegel, a non-minimal set of fields are added to the pure spinor formalism for the superstring. Twisted ĉ = 3 N = 2 generators are then constructed where the pure spinor BRST operator is the fermionic spin-one generator, and the formalism is interpreted as a critical topological string. Three applications of this topological string theory include the super-Poincare covariant computation of multiloop superstring amplitudes without picture-changing operators, the construction of a cubic open superstring field theory without contact-term problems, and a new four-dimensional version of the pure spinor formalism which computes F-terms in the spacetime action.