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Non-commutativity in a time-dependent background
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DOI：10.1016/S0370-2693(02)03076-9.png)
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摘要
En 中文
We compute a time-dependent non-commutativity parameter in a model with a time-dependent background, a spacetime metric of the plane wave type supported by a Neveu-Schwarz two-form potential. This model is the open string version of the WZW model based on a non-semi-simple group previously studied by Nappi and Witten. Like its closed string counterpart, it is exactly conformally invariant to all orders in alpha(1). We quantize the sigma-model in light-cone gauge, compute the worldsheet propagator, and use it to derive the non-commutativity parameter. (C) 2002 Elsevier Science B.V. All rights reserved.
Keyword:
HARMONIC-OSCILLATOR
FIELD
STRINGS
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期刊
IF:
4.5
论文数:
3.2W
被引数:
7.3W
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