论文标题
手性强场中胶子和重力的MHV散射
MHV scattering of gluons and gravitons in chiral strong fields
论文作者
论文摘要
我们介绍了在违反最大的螺旋性（MHV）螺旋构型中胶木和重力的树水平散射（在某些手性强场上计算的）。我们认为的强大背景是仪表理论和一般相对论中的自偶联平面波，这些平面波得到了准确的对待，并接受了定义明确的S-matrix。量规理论背景耦合的MHV振幅只是熟悉的Parke-Taylor公式的穿着类似物，但重力版本由于引力尾巴而具有非平凡的新结构。这两个公式都有一个残留的积分，而不是时空扰动理论的$ n $ point的$ n-2 $；这种简化是由自dual背景的整合性及其相应的扭曲器描述产生的。当背景变得微不足道时，所得公式通过了几个一致性检查，并限制了胶子和重力的MHV散射的众所周知的表达式。
We present all-multiplicity formulae for the tree-level scattering of gluons and gravitons in the maximal helicity violating (MHV) helicity configuration, calculated in certain chiral strong fields. The strong backgrounds we consider are self-dual plane waves in gauge theory and general relativity, which are treated exactly and admit a well-defined S-matrix. The gauge theory background-coupled MHV amplitude is simply a dressed analogue of the familiar Parke-Taylor formula, but the gravitational version has non-trivial new structures due to graviton tails. Both formulae have just one residual integral rather than the $n-2$ expected at $n$-points from space-time perturbation theory; this simplification arises from the integrability of self-dual backgrounds and their corresponding twistor description. The resulting formulae pass several consistency checks and limit to the well-known expressions for MHV scattering of gluons and gravitons when the background becomes trivial.
