规范理论和引力中$D$维物理状态和的简化
Simplifying $D$-Dimensional Physical-State Sums in Gauge Theory and Gravity
摘要：
我们提供了两个独立的系统的方法来执行$D$维物理状态总和在规范理论和重力在这样一种方式，使虚假的光锥奇点不被引入。一个自然的应用是在维度正则化或更高时空维度理论的背景下的广义么正性。其他应用包括平方矩阵元素，以获得截面，和规范不变张量的分解。
英文摘要：
We provide two independent systematic methods of performing $D$-dimensional physical-state sums in gauge theory and gravity in such a way so that spurious light-cone singularities are not introduced. A natural application is to generalized unitarity in the context of dimensional regularization or theories in higher spacetime dimensions. Other applications include squaring matrix elements to obtain cross sections, and decompositions in terms of gauge-invariant tensors.
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