arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.0124hep-th
收藏

辛嵌入形式下的非交换性和对偶性

Noncommutativity and Duality through the Symplectic Embedding Formalism

Everton M. C. Abreu, Albert C. R. Mendes, Wilson Oliveira

摘要:

本文利用辛理论框架,对交换和非交换(NC)理论的规范嵌入进行了研究。概括起来,该方法的主要特点是在嵌入过程中,规范嵌入理论的无穷小规范生成元的选择简单而直接。除其他优点外,这使得对最终拉格朗日量的控制更大,并对所谓的“任意性问题”带来了一些启示。这种替代嵌入形式主义也提出了一种方法来获得一组动态对偶等效嵌入拉格朗日密度,这是在迭代辛过程中的有限数量的步骤后获得的,相反的结果提出使用BFFT形式主义。另一方面,我们将确切地看到,辛嵌入形式主义可以被看作是Moyal乘积的标准引入的替代和有效程序,以便以自然的方式产生NC理论。为了给非专业人员构建一个教学解释的方法,我们解释的形式主义表明,大量的NC U(1)理论是嵌入在一个规范理论使用这个替代系统的路径的基础上辛框架。此外,作为该方法的其他应用,我们确切地描述了如何获得一个拉格朗日描述的NC版本的一些系统再现众所周知的理论。在其中一些理论中,我们将这一过程应用于Proca模型、无旋流体模型和非对易自对偶模型中,以得到这些理论的对偶等价作用量。为了说明引入非对易性的过程,我们使用手征振子和非简并力学。

英文摘要:

This work is devoted to review the gauge embedding of either commutative and noncommutative (NC) theories using the symplectic formalism framework. To sum up the main features of the method, during the process of embedding, the infinitesimal gauge generators of the gauge embedded theory are easily and directly chosen. Among other advantages, this enables a greater control over the final Lagrangian and brings some light on the so-called "arbitrariness problem". This alternative embedding formalism also presents a way to obtain a set of dynamically dual equivalent embedded Lagrangian densities which is obtained after a finite number of steps in the iterative symplectic process, oppositely to the result proposed using the BFFT formalism. On the other hand, we will see precisely that the symplectic embedding formalism can be seen as an alternative and an efficient procedure to the standard introduction of the Moyal product in order to produce in a natural way a NC theory. In order to construct a pedagogical explanation of the method to the nonspecialist we exemplify the formalism showing that the massive NC U(1) theory is embedded in a gauge theory using this alternative systematic path based on the symplectic framework. Further, as other applications of the method, we describe exactly how to obtain a Lagrangian description for the NC version of some systems reproducing well known theories. Naming some of them, we use the procedure in the Proca model, the irrotational fluid model and the noncommutative self-dual model in order to obtain dual equivalent actions for these theories. To illustrate the process of noncommutativity introduction we use the chiral oscillator and the nondegenerate mechanics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑