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arXiv 0802.4386hep-thmath-phmath.MP
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N=4个力学、WDVV方程和根

N=4 mechanics, WDVV equations and roots

Anton Galajinsky, Olaf Lechtenfeld, Kirill Polovnikov

摘要:

实直线上N=4超共形多粒子量子力学由两个前势U和F控制,它们服从一个关于U的线性偏微分方程组,推广了关于F的Witten-Dijkgraaf-Verlinde-Verlinde(WDVV)方程.使U=0产生一类模型(具有零中心荷),其由有限Coxeter根系统编码。我们将这些WDVV解F推广到两个方面:A_n系统n-参数变形到一般正交n-单形的边集,BCF-型系统形成单参数族。提出了一种分类策略。一个非零的中心荷需要在一个给定的F背景下打开U,这是我们所能达到的标准的根系统的anananterior超过三个粒子的不可分解的系统。然而,在三体情形下,这个推论可以推广到建立一系列基于二面体群I_2(p)的非平凡模型,如果3整除p,则这些模型是置换对称的。

英文摘要:

N=4 superconformal multi-particle quantum mechanics on the real line is governed by two prepotentials, U and F, which obey a system of partial differential equations linear in U and generalizing the Witten-Dijkgraaf-Verlinde-Verlinde (WDVV) equation for F. Putting U=0 yields a class of models (with zero central charge) which are encoded by the finite Coxeter root systems. We extend these WDVV solutions F in two ways: the A_n system is deformed n-parametrically to the edge set of a general orthocentric n-simplex, and the BCF-type systems form one-parameter families. A classification strategy is proposed. A nonzero central charge requires turning on U in a given F background, which we show is outside of reach of the standard root-system ansatz for indecomposable systems of more than three particles. In the three-body case, however, this ansatz can be generalized to establish a series of nontrivial models based on the dihedral groups I_2(p), which are permutation symmetric if 3 divides p. We explicitly present their full prepotentials.

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