Celestial superamplitudes
Celestial superamplitudes
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天体超振幅
DOI:
10.1103/physrevd.104.045016
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发表时间:
2021
影响因子:
5
通讯作者:
G. Travaglini
中科院分区:
文献类型:
--
作者:
A. Brandhuber;Graham R. Brown;J. Gowdy;B. Spence;G. Travaglini
We study celestial amplitudes in (super) Yang-Mills theory using a parameterisation of the spinor helicity variables where their overall phase is not fixed by the little group action. In this approach the spin constraint $h-\bar{h}=J$ for celestial conformal primaries emerges naturally from a new Mellin transform, and the action of conformal transformations on celestial amplitudes is derived. Applying this approach to $\mathcal{N}\!=\!4$ super Yang-Mills, we show how the appropriate definition of on-shell superspace coordinates leads naturally to a formulation of chiral celestial superamplitudes and a representation of the generators of the four-dimensional superconformal algebra on the celestial sphere, which by construction annihilate all tree-level celestial superamplitudes.
影响因子:
3.5
作者:
Adamo T
通讯作者:
Adamo T
影响因子:
5.4
作者:
J. Drummond;J. Henn;J. Plefka
通讯作者:
J. Drummond;J. Henn;J. Plefka
影响因子:
5.4
作者:
A. Fotopoulos;S. Stieberger;T. R. Taylor;B. Zhu
通讯作者:
A. Fotopoulos;S. Stieberger;T. R. Taylor;B. Zhu