Yangian symmetry for the tree amplituhedron
Yangian symmetry for the tree amplituhedron
复制标题
树幅面体的 Yangian 对称性
DOI:
10.1088/1751-8121/aa7594
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
M. Parisi
中科院分区:
文献类型:
--
作者:
L. Ferro;T. Lukowski;A. Orta;M. Parisi
Tree-level scattering amplitudes in planar N= 4 super Yang–Mills are known to be Yangian-invariant. It has been shown that integrability allows obtaining a general, explicit method to find such invariants. The uplifting of this result to the amplituhedron construction has been an important open problem. In this paper, with the help of methods proper to integrable theories, we successfully fill this gap and clarify the meaning of Yangian invariance for the tree-level amplituhedron. In particular, we construct amplituhedron volume forms from an underlying spin chain. As a by-product of this construction, we also propose a new on-shell diagrammatics for the amplituhedron.
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