Noncommutativity in a Time-Dependent Background
高能物理 - 理论
2010-11-15 v3
摘要
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.
引用
@article{arxiv.hep-th/0210030,
title = {Noncommutativity in a Time-Dependent Background},
author = {Louise Dolan and Chiara R. Nappi},
journal= {arXiv preprint arXiv:hep-th/0210030},
year = {2010}
}
备注
12 pages; v3: statement corrected and references added