A Scaling Limit With Many Noncommutativity Parameters

Details A Scaling Limit With Many Noncommutativity Parameters A Scaling Limit With Many Noncommutativity Parameters

2000-09-27

arxiv.org/abs/hep-th/0009225v1

Phys.Lett.B504:329-337,2001

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, harvmac

Scientific paper

10.1016/S0370-2693(01)00265-9

We derive the worldsheet propagator for an open string with different magnetic fields at the two ends, and use it to compute two distinct noncommutativity parameters, one at each end of the string. The usual scaling limit that leads to noncommutative Yang-Mills can be generalized to a scaling limit in which both noncommutativity parameters enter. This corresponds to expanding a theory with U(N) Chan-Paton factors around a background U(1)^N gauge field with different magnetic fields in each U(1).

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