Noncommutativity in string theory and D-branes

被引：4
|
作者：
Chaichian, M
Polyakov, D
机构：
[1] Univ Helsinki, Dept Phys Sci, High Energy Phys Div, FIN-00014 Helsinki, Finland
[2] Helsinki Inst Phys, FIN-00014 Helsinki, Finland
来源：
PHYSICS LETTERS B | 2002年 / 535卷 / 1-4期
基金：
芬兰科学院;
关键词：
D O I：
10.1016/S0370-2693(02)01717-3
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
String theory in a constant B-field exhibits noncommutative structure of space-time. By considering the B-field dynamical and studying its interaction with Ramond-Ramond (RR) background we observe the breaking of the B-field gauge symmetry in the effective action. This effect takes place due to nonperturbative coupling of the B-field to membrane topological charge. As a result, the B-field is renormalized in the RR backgrounds, making it impossible to obtain consistent noncommutative models with constant B-field. We argue that the gauge invariance should be restored by introducing appropriate external D-brane configuration. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码：321 / 327
页数：7
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