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arXiv · hep-th/0012035

The Geometry of Fractional Branes

M. Frau·A. Liccardo·R. Musto
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Abstract

By looking at fractional Dp-branes of type IIA on T_4/Z_2 as wrapped branes and by using boundary state techniques we construct the effective low-energy action for the fields generated by fractional branes, build their world-volume action and find the corresponding classical geometry. The explicit form of the classical background is consistent only outside an enhancon sphere of radius r_e, which encloses a naked singularity of repulson-type. The perturbative running of the gauge coupling constant, dictated by the NS-NS twisted field that keeps its one-loop expression at any distance, also fails at r_e.

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M. Frau, A. Liccardo, R. Musto. 2000-12-22. The Geometry of Fractional Branes. https://doi.org/10.1016/s0550-3213(01)00107-9

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