Forces between stable non-BPS branes

Details Forces between stable non-BPS branes Forces between stable non-BPS branes

2001-08-23

arxiv.org/abs/hep-th/0108178v3

Phys.Lett. B528 (2002) 139-148

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, 2 figures, revtex

Scientific paper

10.1016/S0370-2693(02)01186-3

As a step toward constructing realistic brane world models in string theory, we consider the interactions of a pair of non-BPS branes. We construct a dyonic generalization of the non-BPS branes first constructed by Bergman, Gaberdiel and Sen as orbifolds of D-branes on $T^4/\BZ_2$. The force between a dyonic brane and an electric brane is computed and is found to vanish at a nontrivial critical separation. This equilibrium point is unstable. For smaller separations the branes coalesce to form a composite dyonic state, while for larger separations the branes run off to infinity. We suggest generalizations that will lead to potentials with stable local minima.

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