arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1012.2883hep-th
收藏

Worldline形式中的半透明边界条件

Semi-transparent Boundary Conditions in the Worldline Formalism

S. A. Franchino Viñas, P. A. G. Pisani

摘要:

一个量子场与一个背景的相互作用,这个背景包含一个在余维为1的表面上支撑的狄拉克δ函数,它代表了这个场在那个表面上的一种特殊的匹配条件。在这篇文章中,我们表明,世界线形式主义可以适用于这个模型。在任意正则势存在的情况下,在平面上满足这类匹配条件,得到了$\mathbb{R}^{d+1}$上标量场对应的热核的渐近展开式.我们还考虑了两个这样的表面,并计算它们的Casimir吸引力由于真空涨落的大质量标量场弱耦合到相应的狄拉克三角洲。

英文摘要:

The interaction of a quantum field with a background containing a Dirac delta function with support on a surface of codimension 1 represents a particular kind of matching conditions on that surface for the field. In this article we show that the worldline formalism can be applied to this model. We obtain the asymptotic expansion of the heat-kernel corresponding to a scalar field on $\mathbb{R}^{d+1}$ in the presence of an arbitrary regular potential and subject to this kind of matching conditions on a flat surface. We also consider two such surfaces and compute their Casimir attraction due to the vacuum fluctuations of a massive scalar field weakly coupled to the corresponding Dirac deltas.

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。

↑