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arXiv 1003.3025hep-thmath-phmath.MPquant-ph
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基于位置依赖非交换性的字符串

Strings from position-dependent noncommutativity

Andreas Fring, Laure Gouba, Frederik G. Scholtz

摘要:

我们引入了一组新的非对易时空对易关系在两个空间维度。空-空对易关系是标准平坦非对易时空关系的变形,这里采用的是位置相关的结构常数。一些新的变量在最自然的选择中是非厄米的。我们通过Dyson映射构造了它们的厄米特对应物,这也有助于引入一个新的度量算子。我们提出PT样对称,即反线性对合映射,尊重这些变形。我们计算最小的长度和动量在这个空间中产生的广义版本海森堡的不确定性关系,并发现任何对象在这个二维空间是字符串一样,即有一个基本的长度在一个方向上,超过该决议是不可能的。随后,我们制定和部分解决这些新的变量,自由粒子,其PT对称变形和谐振子的一些简单的模型。

英文摘要:

We introduce a new set of noncommutative space-time commutation relations in two space dimensions. The space-space commutation relations are deformations of the standard flat noncommutative space-time relations taken here to have position dependent structure constants. Some of the new variables are non-Hermitian in the most natural choice. We construct their Hermitian counterparts by means of a Dyson map, which also serves to introduce a new metric operator. We propose PTlike symmetries, i.e.antilinear involutory maps, respected by these deformations. We compute minimal lengths and momenta arising in this space from generalized versions of Heisenberg's uncertainty relations and find that any object in this two dimensional space is string like, i.e.having a fundamental length in one direction beyond which a resolution is impossible. Subsequently we formulate and partly solve some simple models in these new variables, the free particle, its PT-symmetric deformations and the harmonic oscillator.

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。

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