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arXiv 0704.3699quant-ph
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朗道能级的维格纳函数、相干态、一维边缘几率和测不准结构

Wigner functions, coherent states, one-dimensional marginal probabilities and uncertainty structures of Landau levels

B. Demircioglu, A. Vercin

摘要:

在形变量子化的自治框架下,采用生成函数方法研究了朗道系统的相空间特性。建立了生成函数的相干态性质,导出了沿正则坐标线的边缘概率密度。在相空间中定义了内积、Cauchy-Bunyakowsy-Schwarz不等式和状态泛函的定义类似物,并将它们用于分析测不准结构。导出了两个实值函数的不确定关系的一般形式,并在Wigner函数描述的状态下计算了不确定积。给出了标准相干态的最小测不准态性质,分析了相空间广义相干态的测不准结构。

英文摘要:

Following an approach based on generating function method phase space characteristics of Landau system are studied in the autonomous framework of deformation quantization. Coherent state property of generating functions is established and marginal probability densities along canonical coordinate lines are derived. Well defined analogs of inner product, Cauchy-Bunyakowsy-Schwarz inequality and state functional have been defined in phase space and they have been used in analyzing the uncertainty structures. The general form of the uncertainty relation for two real-valued functions is derived and uncertainty products are computed in states described by Wigner functions. Minimum uncertainty state property of the standard coherent states is presented and uncertainty structures in the case of phase space generalized coherent states are analyzed.

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