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arXiv 0709.2691hep-th
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约束与E10陪集模型

Constraints and the E10 Coset Model

Thibault Damour, Axel Kleinschmidt, Hermann Nicolai

摘要:

我们继续研究一维E10陪集模型(E10/K(E10)上的无质量旋转粒子运动),已知其低水平动力学在适当的截断下与最大超引力理论的运动方程一致。我们表明,陪集动力学(截断水平小于或等于3)可以始终限制,要求消失的一组约束,这是在一对一的对应关系与规范的超引力约束。因此,由此产生的约束sigma模型动力学捕获了这个截断中的全部(约束)超重力动力学。值得注意的是,玻色子约束被发现是可表达的Sugawara样(电流x电流)的形式在保守的E10 Noether电流,并变换协变下的上抛物子群E10+的E10。我们讨论了这一结果的可能影响,特别是表现出诱人的链接与通常的仿射Sugawara建设截断E10的仿射子群E9。

英文摘要:

We continue the study of the one-dimensional E10 coset model (massless spinning particle motion on E10/K(E10) whose dynamics at low levels is known to coincide with the equations of motion of maximal supergravity theories in appropriate truncations. We show that the coset dynamics (truncated at levels less or equal to three) can be consistently restricted by requiring the vanishing of a set of constraints which are in one-to-one correspondence with the canonical constraints of supergravity. Hence, the resulting constrained sigma-model dynamics captures the full (constrained) supergravity dynamics in this truncation. Remarkably, the bosonic constraints are found to be expressible in a Sugawara-like (current x current) form in terms of the conserved E10 Noether current, and transform covariantly under an upper parabolic subgroup E10+ of E10. We discuss the possible implications of this result, and in particular exhibit a tantalising link with the usual affine Sugawara construction in the truncation of E10 to its affine subgroup E9.

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