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arXiv 0909.0465hep-th
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量子复标量场与非对易性

Quantum complex scalar fields and noncommutativity

Ricardo Amorim, Everton M. C. Abreu

摘要:

在这项工作中,我们分析复杂的标量场使用一个新的框架,其中的对象的非交换性$θ^{μν}$表示独立的自由度。在第一量子化形式中,$θ^{μν}$和它的正则动量$π_{μν}$被看作是存在于某个希尔伯特空间中的算子。这个结构与DFR代数的最小标准扩张相容,并且在扩展的Poincaré对称群下是不变的。在第二个量化形式主义的角度来看,我们提出了一个显式的形式,扩展庞加莱生成器和相同的代数生成通过广义海森堡关系。我们还引入了一个源项,并利用格林函数技巧构造了复标量场的通解。

英文摘要:

In this work we analyze complex scalar fields using a new framework where the object of noncommutativity $θ^{μν}$ represents independent degrees of freedom. In a first quantized formalism, $θ^{μν}$ and its canonical momentum $π_{μν}$ are seen as operators living in some Hilbert space. This structure is compatible with the minimal canonical extension of the Doplicher-Fredenhagen-Roberts (DFR) algebra and is invariant under an extended Poincaré group of symmetry. In a second quantized formalism perspective, we present an explicit form for the extended Poincaré generators and the same algebra is generated via generalized Heisenberg relations. We also introduce a source term and construct the general solution for the complex scalar fields using the Green's function technique.

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