Remarks on Covariant Matrix Strings

Details Remarks on Covariant Matrix Strings Remarks on Covariant Matrix Strings

1999-07-13

arxiv.org/abs/hep-th/9907099v2

Phys.Lett. B465 (1999) 119-127

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, harvmac. References added, version to appear in PLB

Scientific paper

We address the issue of the worldsheet and spacetime covariant formulation for matrix strings. The problem is solved in the limit of vanishing string coupling. To go beyond the g_s = 0 limit, we propose a topological quantum field theory as a twisted candidate. Our model involves the generalized octonionic or SU(4) instanton equations defined in eight dimensions for a supersymmetric U(N) Yang--Mills field living on a special holonomy manifold. The question of untwisting this matrix model into an anomaly free theory enlightens the need for an "extended" 2d-gravity sector, that we suggest could be (partially twisted) W-gravity.

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