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arXiv 0704.2069hep-th
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q-形变超对称与动态磁振子表象

q-Deformed Supersymmetry and Dynamic Magnon Representations

C. A. S. Young

摘要:

最近有人指出,平面N=4 SYM的磁振子的色散关系可以用Poincare代数的某种变形的Casimir来确定,其中能量和动量算符由boost生成元J补充。通过考虑J和su(2)之间的关系,|2)xR^2,得到了运动学的q变形超Poincare对称代数。利用这一点,我们表明,动态磁振子表示可以得到从一个固定的静止坐标系表示的提升。我们评论方面的余代数结构和一些影响的问题,提升协方差的S-矩阵。

英文摘要:

It was recently noted that the dispersion relation for the magnons of planar N=4 SYM can be identified with the Casimir of a certain deformation of the Poincare algebra, in which the energy and momentum operators are supplemented by a boost generator J. By considering the relationship between J and su(2|2) x R^2, we derive a q-deformed super-Poincare symmetry algebra of the kinematics. Using this, we show that the dynamic magnon representations may be obtained by boosting from a fixed rest-frame representation. We comment on aspects of the coalgebra structure and some implications for the question of boost-covariance of the S-matrix.

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