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arXiv 2609.08378hep-thgr-qc

二维球面上带吴-杨磁单极的标量卡西米尔效应

Scalar Casimir Effect on a Two-Dimensional Sphere with a Wu--Yang Magnetic Monopole

Jun-Cheng Zhang, Xiao-Yin Pan, Juhao Wu, Qing-hai Wang

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中文总结 AI 辅助

本研究解析求解二维球面上带吴-杨磁单极的复标量场卡西米尔效应,发现强单极可使压力由吸引变排斥,为排斥真空应力提供新来源。

中文摘要 AI 辅助

我们研究了在中心固定有吴-杨磁单极的二维球面上,复标量场的卡西米尔效应。在此背景下,带电标量场是$S^2$上非平凡复线丛的一个截面,反映了磁单极的非平凡拓扑性质。我们解析地求解了克莱因-戈登方程,并利用适用于多值函数的广义阿贝尔-普拉纳公式计算了卡西米尔能量。我们发现,当磁单极强度足够大时,磁单极可以使卡西米尔压力的符号反转,将吸引力转变为排斥力。这种行为在广泛的曲率耦合范围内持续存在,并表明吴-杨磁单极可能提供排斥性真空应力的来源,对引力和宇宙学背景可能具有潜在影响。

英文摘要

We investigate the Casimir effect of a complex scalar field on a two-dimensional sphere threaded by a fixed Wu--Yang magnetic monopole at the center. In this background the charged scalar field is a section of a nontrivial complex line bundle over $S^2$, reflecting the monopole's nontrivial topology. We solve the Klein--Gordon equation analytically and compute the Casimir energy using a generalized Abel--Plana formula for multivalued functions. We find that the monopole can reverse the sign of the Casimir pressure, turning an attractive force into a repulsive one when the monopole strength is sufficiently large. This behavior persists across a broad range of curvature couplings and suggests that Wu--Yang monopoles may provide a source of repulsive vacuum stress, with possible implications for gravitational and cosmological settings.

发表机构

  • Ningbo University(宁波大学)
  • Stanford University(斯坦福大学)
  • National University of Singapore(新加坡国立大学)

机构由 AI 辅助整理,请以论文原文为准。

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