Constraints and the E10 Coset Model

Details Constraints and the E10 Coset Model Constraints and the E10 Coset Model

2007-09-17

arxiv.org/abs/0709.2691v1

Class.Quant.Grav.24:6097-6120,2007

Physics

High Energy Physics

High Energy Physics - Theory

34 pages

Scientific paper

10.1088/0264-9381/24/23/025

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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