arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1312.2007hep-thmath.AG
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振幅面体

The Amplituhedron

Nima Arkani-Hamed, Jaroslav Trnka

摘要:

规范理论中的微扰散射振幅具有显著的简单性和隐藏的无穷维对称性,这些对称性在传统的场论中使用费曼图是完全模糊的。这表明存在一个新的理解散射振幅的局部性和幺正性不发挥核心作用,但从不同的出发点派生的后果。在本文中,我们提供了这样一个理解N=4 SYM散射振幅在平面极限,我们确定为“体积”的一个新的数学对象-振幅面体-推广积极的格拉斯曼。定域性和么正性从正几何中携手出现。

英文摘要:

Perturbative scattering amplitudes in gauge theories have remarkable simplicity and hidden infinite dimensional symmetries that are completely obscured in the conventional formulation of field theory using Feynman diagrams. This suggests the existence of a new understanding for scattering amplitudes where locality and unitarity do not play a central role but are derived consequences from a different starting point. In this note we provide such an understanding for N=4 SYM scattering amplitudes in the planar limit, which we identify as ``the volume" of a new mathematical object--the Amplituhedron--generalizing the positive Grassmannian. Locality and unitarity emerge hand-in-hand from positive geometry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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