Bound States of Type I' D-particles and Enhanced Gauge Symmetry

Details Bound States of Type I' D-particles and Enhanced Gauge Symmetry Bound States of Type I' D-particles and Enhanced Gauge Symmetry

1997-01-31

arxiv.org/abs/hep-th/9702006v2

Nucl.Phys. B501 (1997) 134-142

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, harvmac (b mode), minor corrections

Scientific paper

10.1016/S0550-3213(97)00345-3

Duality between the E_8 x E_8 heterotic string and Type I' theory predicts a tower of D(irichlet)-particle bound states corresponding to perturbative heterotic string states. In the limit of infinite Type I' coupling, some of these bound states become massless, giving rise to enhanced E_8 x E_8 gauge symmetry. By taking a different infinite coupling limit, one can recover the E_8 x E_8 gauge bosons of M-theory, compactified on S^1/Z_2. In this paper we use the matrix model description of the D-particle dynamics to study these bound states. We find results consistent with the chain of dualities and clarify a number of issues that arise in the application of the matrix mechanics to this system.

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