spinney: A Form library for helicity spinors

Abstract
In this work, the library spinney is presented, which provides an implementation of helicity spinors and related algorithms for the symbolical manipulation program Form. The package is well suited for symbolic amplitude calculations both in traditional, Feynman diagram based approaches and unitarity-based techniques.

Title of program: spinney
Catalogue Id: AEJQ_v1_0

Nature of problem
Implementation of the spinor-helicity formalism

Versions of this program held in the CPC repository in Mendeley Data
AEJQ_v1_0; spinney; 10.1016/j.cpc.2011.06.007

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

摘要
本工作介绍了程序库spinney，其为符号运算程序Form实现了螺旋旋量（helicity spinors）及相关算法。该程序包适配于两类场景下的符号振幅计算：一是基于传统费恩曼图的计算方法，二是基于幺正性的计算技术。

程序名称：spinney
目录编号：AEJQ_v1_0

问题本质：旋量-螺旋度形式（spinor-helicity formalism）的实现

Mendeley数据中的CPC程序库内留存的本程序版本：AEJQ_v1_0；spinney；10.1016/j.cpc.2011.06.007

本程序源自贝尔法斯特女王大学所维护的CPC程序库（1969-2018年）