Fermionic vacuum polarization in higher-dimensional global monopole spacetime

Details Fermionic vacuum polarization in higher-dimensional global monopole spacetime Fermionic vacuum polarization in higher-dimensional global monopole spacetime

2007-08-16

arxiv.org/abs/0708.2194v1

Phys.Rev.D76:125021,2007

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 3 figures

Scientific paper

10.1103/PhysRevD.76.125021

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, $_{Ren.}$, 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 $n$.

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