One-loop corrections from higher dimensional tree amplitudes
文献类型：期刊论文
| 作者 | Cachazo, F; He, S ; Yuan, EY; Cachazo, F (reprint author), Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada.
|
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2016 |
| 期号 | 8页码:8 |
| 关键词 | Scattering Amplitudes Field Theories In Higher Dimensions |
| DOI | http://dx.doi.org/10.1007/JHEP08(2016)008 |
| 英文摘要 | We show how one-loop corrections to scattering amplitudes of scalars and gauge bosons can be obtained from tree amplitudes in one higher dimension. Starting with a complete tree-level scattering amplitude of n + 2 particles in five dimensions, one assumes that two of them cannot be "detected" and therefore an integration over their LIPS is carried out. The resulting object, function of the remaining n particles, is taken to be four-dimensional by restricting the corresponding momenta. We perform this procedure in the context of the tree-level CHY formulation of amplitudes. The scattering equations obtained in the procedure coincide with those derived by Geyer et al. from ambitwistor constructions and recently studied by two of the authors for bi-adjoint scalars. They have two sectors of solutions: regular and singular. We prove that the contribution from regular solutions generically gives rise to unphysical poles. However, using a BCFW argument we prove that the unphysical contributions are always homogeneous functions of the loop momentum and can be discarded. We also show that the contribution from singular solutions turns out to be homogeneous as well. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21575]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Cachazo, F (reprint author), Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada. |
| 推荐引用方式 GB/T 7714 | Cachazo, F,He, S,Yuan, EY,et al. One-loop corrections from higher dimensional tree amplitudes[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(8):8. |
| APA | Cachazo, F,He, S,Yuan, EY,&Cachazo, F .(2016).One-loop corrections from higher dimensional tree amplitudes.JOURNAL OF HIGH ENERGY PHYSICS(8),8. |
| MLA | Cachazo, F,et al."One-loop corrections from higher dimensional tree amplitudes".JOURNAL OF HIGH ENERGY PHYSICS .8(2016):8. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。