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arXiv 2307.05367quant-phgr-qchep-th
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通过广义不确定性原理研究三维中的最小长度

Minimal Lengths in 3D via the Generalized Uncertainty Principle

Michael Bishop, Joey Contreras, Peter Martin, Piero Nicolini, Douglas Singleton

AI总结:

本文通过坐标无关地修改三维位置与动量算符并约束物理动量,在三维广义不确定性原理框架下推导出各方向有效最小长度,并发现平行与垂直于粒子动量方向的最小距离存在差异。

摘要:

我们通过修改三维位置算符和动量算符来研究广义不确定性原理(GUP)在三维中的扩展,修改方式保持坐标无关性,并尽可能保留标准位置-动量对易关系。此外,我们对物理动量施加约束,从而在每个坐标方向上产生有效的最小长度。这些修改后算符的物理后果在两个场景中进行了探讨:(i)当球对称波函数被“压缩”到最小可能体积时;(ii)当动量指向单一方向时。在情形(ii)中,我们发现三维GUP表现出一维中不会出现的有趣现象:平行于粒子动量方向的最小距离与正交方向上的最小距离不同。

英文摘要:

We investigate an extension of the Generalized Uncertainty Principle (GUP) in three dimensions by modifying the three dimensional position and momentum operators in a manner that remains coordinate-independent and retains as much of the standard position-momentum commutators as possible. Moreover, we bound the physical momentum which leads to an effective minimal length in every coordinate direction. The physical consequences of these modified operators are explored in two scenarios: (i) when a spherically-symmetric wave function is `compressed' into the smallest possible volume; (ii) when the momentum is directed in a single direction. In case (ii), we find that the three dimensional GUP exhibits interesting phenomena that do not occur in one dimension: the minimal distance in the direction parallel to a particle's momentum is different from the minimal distance in the orthogonal directions.

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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