منابع مشابه
Zero branes on a Compact Orbifold
The non-commutative algebra which defines the theory of zero branes on T /Z2 allows a unified description of moduli spaces associated with 0-branes, 2-branes and 4-branes on the orbifold space. Bundles on a dual space T̂ /Z2 play an important role in this description. We discuss these moduli spaces in the context of dualities of K3 compactifications, and in terms of properties of instantons on T...
متن کاملFractional Branes on a Non-compact Orbifold
Fractional branes on the non-compact orbifold C3/Z5 are studied. First, the boundary state description of the fractional branes are obtained. The open-string Witten index calculated using these states reproduces the adjacency matrix of the quiver of Z5. Then, using the toric crepant resolution of the orbifold C3/Z5 and invoking the local mirror principle, B-type branes wrapped on the holomorphi...
متن کاملOrbifold and Twisted Zero-branes
M(atrix) theory compactified on an orbifold T9/Z2 is studied. Via zero-brane parton scattering we find that each of the 2 = 254 orbifold fixed points carry −1/32 units of zero-brane charge. The anomalous flux is cancelled by introducing a twisted sector consisting of 32 zero-branes that are spacetime supersymmetry singlets. These twisted sector zero-branes are nothing but gravitational waves pr...
متن کاملFractional S-branes on a Spacetime Orbifold
Unstable D-branes are central objects in string theory, and exist also in time-dependent backgrounds. In this paper we take first steps to studying brane decay in spacetime orbifolds. As a concrete model we focus on the R/Z2 orbifold. We point out that on a spacetime orbifold there exist two kinds of S-branes, fractional S-branes in addition to the usual ones. We investigate their construction ...
متن کاملOrbifold and Five-branes
We study M(atrix) theory description of M theory compactified on T5/Z2 orbifold. In the large volume limit we show that M theory dynamics is described by N = 8 supersymmetric USp(2N) M(atrix) quantum mechanics. Via zero-brane parton scattering, we show that each orbifold fixed point carries anomalous G-flux ∮ [G/2π] = −1/2. To cancel the anomalous Gflux , we introduce twisted sector consisting ...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 1998
ISSN: 1029-8479
DOI: 10.1088/1126-6708/1998/07/009