Correlation functions of the chiral stress-tensor multiplet in N=4 SYM
Correlation functions of the chiral stress-tensor multiplet in N=4 SYM
复制标题
N=4 SYM 中手性应力张量多重态的相关函数
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
E. Sokatchev
中科院分区:
文献类型:
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作者:
D. Chicherin;R. Doobary;B. Eden;P. Heslop;G. Korchemsky;L. Mason;E. Sokatchev
We give a new method for computing the correlation functions of the chiral part of the stress-tensor supermultiplet that relies on the reformulation of N=4 SYM in twistor space. It yields the correlation functions in the Born approximation as a sum of Feynman diagrams on twistor space that involve only propagators and no integration vertices. We use this unusual feature of the twistor Feynman rules to compute the correlation functions in terms of simple building blocks which we identify as a new class of N=4 off-shell superconformal invariants. Making use of the duality between correlation functions and planar scattering amplitudes, we demonstrate that these invariants represent an off-shell generalisation of the on-shell invariants defining tree-level scattering amplitudes in N=4 SYM.
影响因子:
5.4
作者:
L. Mason;David Skinner
通讯作者:
L. Mason;David Skinner
影响因子:
5.4
作者:
L. Mason;David Skinner
通讯作者:
L. Mason;David Skinner
影响因子:
5.4
作者:
J. Drummond;J. Henn;J. Plefka
通讯作者:
J. Drummond;J. Henn;J. Plefka