BPS states of strings in three form flux

We count the BPS states of strings in uniform 3-form fluxes, using supersymmetric quantum mechanics derived from the kappa-symmetric action for D-branes. This problem is relevant to the stringy physics of warped compactifications. We work on a type IIB T^6/Z_2 orientifold with imaginary self-dual, quantized, 3-form flux. Ignoring the orientifold projection, the number of short multiplets living on a single string is the square of the units of 3-form flux present on the torus: the orientifold removes roughly half of the multiplets. We review the well-known case of a superparticle on T^2 as an pedagogical example.

11.25.Sq
11.25.Mj
11.30.Pb
11.25.Uv
string model
supercharge
soliton: BPS
particle: relativistic
Hamiltonian formalism
wave function

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