论文标题
几个领域的CHY理论
CHY Theory for Several Fields
论文作者
论文摘要
Cachazo-He-Yuan（CHY）公式最初是为了描述单个无质量场的颗粒的壳散射。我们提出了一种修改它的方法，以包括几个相互作用的标量字段，它们都具有不同的质量和可能的外壳动量。该方法应用于许多标量核和亲核之间的Yukawa相互作用，以及$ \ f_1 \ f_2 \ f_3 $耦合的$ \ f_1 \ f_2 \ f_3 $耦合。根据现有理论构建的复合模型可以用来扩大该方法的范围。该修饰用于描述从巨大粒子和bremsstrahlung的康普顿散射。它也被用来概括磁盘函数$ z $和Sphere函数$ J $。
The Cachazo-He-Yuan (CHY) formula was originally proposed to describe on-shell scattering of particles from a single massless field. We present a method to modify it to include several interacting scalar fields, all possessing different masses and possibly off-shell momenta. The method is applied to Yukawa interactions between a number of scalar nucleons and pions, and to the $\f_1\f_2\f_3$ coupling of three different scalar fields. Composite models constructed from existing theories can be used to broaden the scope of the method. The modification is applied to describe Compton scattering from a massive particle, and to photon bremsstrahlung. It is also employed to generalize the disk function $Z$ and the sphere function $J$.
