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arXiv 1502.07151quant-phmath-phmath.MP
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弯曲空间中存在Aharonov-Bohm势时点粒子的量子运动

Quantum motion of a point particle in the presence of the Aharonov--Bohm potential in curved space

Edilberto O. Silva, Sérgio C. Ulhoa, Fabiano M. Andrade, Cleverson Filgueiras, R. G. G. Amorin

摘要:

研究了弯曲空间中存在Aharonov-Bohm势时无自旋带电粒子的非相对论量子动力学。我们选择的表面是由极坐标系中的线元素定义的圆锥体。这个线元素的几何形状确定了质点的运动可以发生在圆锥或反圆锥的表面上。由于锥的非平凡拓扑结构,也由于二维限制,几何势应考虑在内。首先,我们建立了在这样的背景下,粒子描述圆形路径的条件。由于几何势的存在,其中包含一个奇异项,我们使用自伴随扩张方法,以描述在所有空间,包括奇异的动力学。得到了束缚态能量和波函数的表达式。

英文摘要:

The nonrelativistic quantum dynamics of a spinless charged particle in the presence of the Aharonov--Bohm potential in curved space is considered. We chose the surface as being a cone defined by a line element in polar coordinates. The geometry of this line element establishes that the motion of the particle can occur on the surface of a cone or an anti--cone. As a consequence of the nontrivial topology of the cone and also because of two--dimensional confinement, the geometric potential should be taken into account. At first, we establish the conditions for the particle describing a circular path in such a context. Because of the presence of the geometric potential, which contains a singular term, we use the self--adjoint extension method in order to describe the dynamics in all space including the singularity. Expressions are obtained for the bound state energies and wave functions.

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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