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arXiv · hep-th/0210030

Noncommutativity in a Time-Dependent Background

Louise Dolan·Chiara R. Nappi
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Abstract

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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Louise Dolan, Chiara R. Nappi. 2004-11-27. Noncommutativity in a Time-Dependent Background. https://doi.org/10.1016/s0370-2693(02)03076-9

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