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arXiv 0708.2194hep-thgr-qc
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高维整体超时空中的费米真空极化

Fermionic vacuum polarization in higher-dimensional global monopole spacetime

E. R. Bezerra de Mello

摘要:

在本文中,我们分析了真空极化效应与无质量的费米子场在一个更高的维全球性的时空在“膜世界”的情况下。在这种情况下,我们承认,我们的宇宙,大部分,是由一个平坦的$(n-1)-$维膜具有一个整体在一个额外的横向三维子流形。我们明确地计算了能量动量张量的重整化真空平均值,$<T_A^B(x)>_{Ren.}$,承认全球ESTA是一个点状物体。我们观察到,这个数量取决于$n$的值至关重要,我们提供明确的表达式,它的特定值归因于$n$。

英文摘要:

In this paper we analyse the vacuum polarization effects associated with a massless fermionic field in a higher-dimensional global monopole spacetime in the "braneworld" scenario. In this context we admit that the our Universe, the bulk, is represented by a flat $(n-1)-$dimensional brane having a global monopole in a extra transverse three dimensional submanifold. We explicitly calculate the renormalized vacuum average of the energy-momentum tensor, $<T_A^B(x)>_{Ren.}$, admitting the global monopole as being a point-like object. We observe that this quantity depends crucially on the value of $n$, and we provide explicit expressions to it for specific values attributed to $n$.

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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