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arXiv 1903.00512hep-th
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弱引力场中Casimir能量的二阶修正

Null Second Order Corrections to Casimir Energy in Weak Gravitational Field

A. P. C. M. Lima, G. Alencar, C. R. Muniz, R. R. Landim

摘要:

真空能的讨论是当前一个具有重要理论意义的课题,特别是涉及到广义相对论中的宇宙学常数问题。根据量子场论,真空态受边界条件的影响,可能会在这些边界上产生张力,这与可测量的非零重整化真空能量有关:卡西米尔效应。因此,研究这些真空态和能量在弯曲背景中的行为是很自然的,并且可能在不久的将来提供重要的结果。本文重新讨论了文献中提出并进一步推广的弱引力场背景下的Casimir效应模型。原来用来简化计算的一个技巧,导致一个错误的能量转移值,并通过执行明确的模式扩展,我们到达一个意想不到的结果:零引力校正,即使在顺序$(M/R)^2$,在反对早期的结果。

英文摘要:

The discussion of vacuum energy is currently a subject of great theoretical importance, specially concerning the cosmological constant problem in General Relativity. From Quantum Field Theory, it is stated that vacuum states subject to boundary conditions may generate tensions on these boundaries related to a measurable non-zero renormalized vacuum energy: the Casimir Effect. As such, investigating how these vacuum states and energy behave in curved backgrounds is just natural and might provide important results in the near future. In this paper we revisit a model of the Casimir Effect in weak gravitational field background, which has been proposed and further generalized in the literature. A trick originally used to simplify calculations is shown to lead to a wrong value for the energy shift, and by performing explicit mode expansion we arrive at an unexpected result: null gravitational correction even at order $(M/R)^2$, in opposition to earlier results.

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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