On Yangian-invariant regularization of deformed on-shell diagrams in N = 4 ?> super-Yang–Mills theory
On Yangian-invariant regularization of deformed on-shell diagrams in N = 4 ?> super-Yang–Mills theory
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DOI：
10.1088/1751-8113/47/36/365402
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发表时间：
2014-01
期刊：
影响因子：
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通讯作者：
N. Beisert;Johannes Broedel;M. Rosso
中科院分区：
文献类型：
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作者：
N. Beisert;Johannes Broedel;M. Rosso
We investigate Yangian invariance of deformed on-shell diagrams with D = 4, N = 4 ?> superconformal symmetry. We find that invariance implies a direct relationship between the deformation parameters and the permutation associated with the on-shell graph. We analyse the connection with deformations of scattering amplitudes in N = 4 ?> super-Yang–Mills theory and the possibility of using the deformation parameters as a regulator preserving Yangian invariance. A study of higher-point tree and loop graphs suggests that manifest Yangian invariance of the amplitude requires trivial deformation parameters.
