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arXiv math/0402401math.QAhep-th
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θ矢量与量子θ函数

Theta Vectors and Quantum Theta Functions

Ee Chang-Young, Hoil Kim

摘要:

本文通过与经典θ函数等价的kq表象和相应的坐标空间波函数的比较,阐明了Manin量子θ函数与Schwarz θ矢量之间的关系。我们首先解释了经典的θ函数和其中相空间的平移算子是可交换的kq表示之间的等价关系。当相空间的平移算子不对易时,则kq表示不再有意义。我们解释了为什么马宁的量子θ函数通过代数(量子环面)的θ向量的内积值得到的是一个自然的选择量子版本的经典θ函数(kq表示)。然后,我们表明,这种方法适用于一个更一般的θ向量与常数从一个全纯连接的常曲率比简单的高斯中使用的Manin的建设。我们进一步讨论了θ矢量和量子θ函数的性质,它们在平移下具有相似的对称性。

英文摘要:

In this paper, we clarify the relation between Manin's quantum theta function and Schwarz's theta vector in comparison with the kq representation, which is equivalent to the classical theta function, and the corresponding coordinate space wavefunction. We first explain the equivalence relation between the classical theta function and the kq representation in which the translation operators of the phase space are commuting. When the translation operators of the phase space are not commuting, then the kq representation is no more meaningful. We explain why Manin's quantum theta function obtained via algebra (quantum tori) valued inner product of the theta vector is a natural choice for quantum version of the classical theta function (kq representation). We then show that this approach holds for a more general theta vector with constant obtained from a holomorphic connection of constant curvature than the simple Gaussian one used in the Manin's construction. We further discuss the properties of the theta vector and of the quantum theta function, both of which have similar symmetry properties under translation.

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