Vacuum Polarization of Massless Spinor Field in Global Monopole Spacetime

TL;DR

This paper calculates the renormalized vacuum energy-momentum tensor of a massless spinor field in a global monopole spacetime, revealing detailed structure and dependence on the solid angle deficit.

Contribution

It provides a detailed calculation of the vacuum polarization effects for massless spinor fields in global monopole backgrounds using point-separation methods.

Findings

Explicit form of the vacuum energy-momentum tensor component $<T^0_0>^{ren}$ derived.

Analysis of the tensor's structure for arbitrary solid angle deficit.

Insights into vacuum polarization effects in topological defect spacetimes.

Abstract

We calculate the renormalized vacuum average of the energy-momentum tensor of massless left-handed spinor field in the pointlike global monopole spacetime using point-separation approach. The general structure of the vacuum average of the energy-momentum tensor is obtained and expressed in terms of $<T^0_0>^{ren}$ component, explicit form of which is analyzed in great details for arbitrary solid angle deficit.