On Noncommutativity in String Theory and D-Branes

Details On Noncommutativity in String Theory and D-Branes On Noncommutativity in String Theory and D-Branes

2002-02-28

arxiv.org/abs/hep-th/0202209v2

Phys.Lett. B535 (2002) 321-327

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, harvmac.tex, references added

Scientific paper

10.1016/S0370-2693(02)01717-3

By considering the B-field dynamical and studying its interaction with Ramond-Ramond (RR) background we observe the breaking of the B-field gauge symmetry in the effective action. This effect takes place due to non-perturbative coupling of the B-field to membrane topological charge. As a result, the B-field is renormalized in the RR backgrounds, making it impossible to obtain consistent non-commutative models with constant B-field. We argue that the gauge invariance is restored by introducing appropriate external D-brane configuration.

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