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arXiv 0901.1960hep-lat
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格点上紧QED的Casimir能量

Casimir energy in the compact QED on the lattice

Oleg Pavlovsky, Maxim Ulybyshev

摘要:

本文提出了一种基于格点Monte-Carlo计算的新方法,研究了具有Wilson作用量的紧致格点U(1)理论中的Casimir效应。我们研究了具有两个平行平面(镜面)和斜边界条件的标准Casimir问题,作为我们方法的测试。物理上,这种边界条件可能出现在薄材料膜相互作用的建模问题中,并且由附加的Chern-Simons边界项产生。由于规范不变性,这种边界条件生成方法非常适合于Casimir问题的格点形式。这种方法可以简单地推广到更复杂的几何和其他规范群的情况。

英文摘要:

A new method based on the Monte-Carlo calculation on the lattice is proposed to study the Casimir effect in the compact lattice U(1) theory with Wilson action. We have studied the standard Casimir problem with two parallel plane surfaces (mirrors) and oblique boundary conditions on those as a test of our method. Physically, this boundary conditions may appear in the problem of modelling of the thin material films interaction and are generated by additional Chern-Simons boundary term. This approach for the boundary condition generation is very suitable for the lattice formulation of the Casimir problem due to gauge invariance. This method can be simply generalized on the case of more complicated geometries and other gauge groups.

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