arxiv: hep-th/0210030 · v3 · pith:63GTXLRJnew · submitted 2002-10-03 · ✦ hep-th

Noncommutativity in a Time-Dependent Background

Louise Dolan , Chiara R. Nappi This is my paper

classification ✦ hep-th

keywords time-dependentbackgroundmodelnoncommutativitycomputeparameteractionconformally

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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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Noncommutativity in a Time-Dependent Background

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