Understanding the cancelation of double poles in the Pfaffian of CHY-formulism

Understanding the cancelation of double poles in the Pfaffian of CHY-formulism

Abstract For a physical field theory, the tree-level amplitudes should possess only single poles. However, when computing amplitudes with Cachazo-He-Yuan (CHY) formulation, individual terms in the intermediate steps will contribute higher-order poles. In this paper, we investigate the cancelation of...

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Bibliographic Details
Main Authors: Rijun Huang, Yi-Jian Du, Bo Feng
Format: Article
Language:English
Published: SpringerOpen 2017-06-01
Series:Journal of High Energy Physics
Subjects:
Scattering Amplitudes
Gauge Symmetry
Online Access:http://link.springer.com/article/10.1007/JHEP06(2017)133

Internet

http://link.springer.com/article/10.1007/JHEP06(2017)133

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