Matrix Theory on ALE Spaces and Wrapped Membranes

Abstract

We study the properties of wrapped membranes in matrix theory on ALE spaces. We show that the only BPS bound states of wrapped membranes that can form are roots of the $A$-$D$-$E$ group. We determine a bound on the energy of a bound state and find the correct dependence on the blow-up parameters and longitudinal momentum expected from M-Theory. For the $A_{n-1}$ series, we construct explicit classical solutions for the wrapped membrane bound states. These states have a very rich structure and have a natural interpretation in terms of noncommutative geometry. In the $A_1$ case, we examine the spectrum of excitations around the wrapped membrane solution and provide an explicit calculation of their energies. The results agree exactly with supergravity calculations.

23 pages LaTeX2e, 1 figure, using utarticle.cls (included), array.sty, amsmath.sty, amsfonts.sty, cite.sty, epsfig. Bibtex style: utphys.bst (.bbl file included)

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• Non-Commutative Moduli Spaces, Dielectric Tori and T-duality
• General covariance of the non-abelian DBI-action
• Non-BPS Dirichlet branes
• Deconstructing graviphoton from mass-deformed ABJM
• Aspects of ABJM orbifolds
• D-branes Wrapped on Fuzzy del Pezzo Surfaces