Noncommutativity in a Time-Dependent Background

Details Noncommutativity in a Time-Dependent Background Noncommutativity in a Time-Dependent Background

2002-10-03

arxiv.org/abs/hep-th/0210030v3

Phys.Lett.B551:369-377,2003

Physics

High Energy Physics

High Energy Physics - Theory

12 pages; v3: statement corrected and references added

Scientific paper

10.1016/S0370-2693(02)03076-9

We compute a time-dependent noncommutativity parameter in a model with a time-dependent background, a space-time metric of the plane wave type supported by a Neveu-Schwarz two-form potential. This model is an open string version of the WZW model based on a non-semi-simple group previously studied by Nappi and Witten. The background we study is not conformally invariant. We consider a light-cone action for the sigma-model, compute the worldsheet propagator, and use it to derive a time-dependent noncommutativity parameter.

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