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Type IIA D-Branes, K-Theory, and Matrix Theory

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arxiv hep-th/9812135 v4 pith:ITYU2KOQ submitted 1998-12-15 hep-th

classification hep-th
keywords typetheoryd9-branesd-branesk-theorymatrixsixteenunstable
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We show that all supersymmetric Type IIA D-branes can be constructed as bound states of a certain number of unstable non-supersymmetric Type IIA D9-branes. This string-theoretical construction demonstrates that D-brane charges in Type IIA theory on spacetime manifold $X$ are classified by the higher K-theory group $K^{-1}(X)$, as suggested recently by Witten. In particular, the system of $N$ D0-branes can be obtained, for any $N$, in terms of sixteen Type IIA D9-branes. This suggests that the dynamics of Matrix theory is contained in the physics of magnetic vortices on the worldvolume of sixteen unstable D9-branes, described at low energies by a U(16) gauge theory.

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Cited by 3 Pith papers

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    Stable D-branes in the Dabholkar-Park background are derived from world-sheet anomalies with boundary Majorana fermions, matching the known relative KR-theory classification and explaining its 4-fold periodicity.

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  3. Waveform Modelling for the Laser Interferometer Space Antenna

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