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arXiv 0906.2161hep-thquant-ph
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作为规范理论的非对易量子力学

Noncommutative quantum mechanics as a gauge theory

F. S. Bemfica, H. O. Girotti

摘要:

非对易量子力学的经典对应物是只包含第二类约束的约束系统。由Batalin,Fradkin和Typhin(BFT)提出的嵌入过程使我们能够将这个系统转化为只具有第一类约束的阿贝尔规范理论。通过表明存在将第二类模型与规范理论的规范不变部分联系起来的一对一映射,验证了本工作中实现的BFT嵌入的适当性。众所周知,规范理论的泛函量子化要求消除规范自由。这样,我们就有了无限多的非对易量子力学的替代描述,每个规范都有一个。我们研究的相关功能,这无限的对应关系。对两个规范系统进行了规范理论的泛函量子化,并与第二类规范系统的结果进行了比较。在算符框架内,用狄拉克方法将规范理论量子化.

英文摘要:

The classical counterpart of noncommutative quantum mechanics is a constrained system containing only second class constraints. The embedding procedure formulated by Batalin, Fradkin and Tyutin (BFT) enables one to transform this system into an Abelian gauge theory exhibiting only first class constraints. The appropriateness of the BFT embedding, as implemented in this work, is verified by showing that there exists a one to one mapping linking the second class model with the gauge invariant sector of the gauge theory. As is known, the functional quantization of a gauge theory calls for the elimination of its gauge freedom. Then, we have at our disposal an infinite set of alternative descriptions for noncommutative quantum mechanics, one for each gauge. We study the relevant features of this infinite set of correspondences. The functional quantization of the gauge theory is explicitly performed for two gauges and the results compared with that corresponding to the second class system. Within the operator framework the gauge theory is quantized by using Dirac's method.

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