Induced gravity in Z_N orientifold models

Details Induced gravity in Z_N orientifold models Induced gravity in Z_N orientifold models

2003-11-26

arxiv.org/abs/hep-th/0311251v4

Nucl.Phys. B697 (2004) 243-270

Physics

High Energy Physics

High Energy Physics - Theory

32 pages

Scientific paper

10.1016/j.nuclphysb.2004.06.040

We consider non-compact Z_N orientifold models of type IIB superstring theory with four-dimensional gravity induced on a set of coincident D3-branes. For the models with odd N the contribution to the one-loop renormalization of the Planck mass is shown to come only from the torus and to be O(N) as the contributions from annulus, Moebius strip and Klein bottle cancel. One can therefore realize the Dvali-Gabadadze-Porrati idea that four-dimensional gravity is induced by quantum effects at the one-loop level by considering large N.

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