Semiclassical Effects Induced by Aharonov-Bohm Interaction Between a Cosmic String and a Scalar Field

Details Semiclassical Effects Induced by Aharonov-Bohm Interaction Between a Cosmic String and a Scalar Field Semiclassical Effects Induced by Aharonov-Bohm Interaction Between a Cosmic String and a Scalar Field

1997-02-14

arxiv.org/abs/gr-qc/9702027v1

Phys.Lett. B398 (1997) 281-284

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, no figures, accepted for publication in Phys. Letters B

Scientific paper

10.1016/S0370-2693(97)00240-2

In the context of the vacuum polarization effect, we consider the backreaction of the energy-momentum tensor of a charged scalar field on the background metric of a cosmic string carrying a magnetic flux $\Phi$. Working within the semiclassical approach to the Einstein eqs. we find the first-order (in $\hbar$) metric associated to the magnetic flux cosmic string. We show that the contribution to the vacuum polarization effect coming from the Aharonov-Bohm interaction is larger than the one coming from the non-trivial gravitational interaction.

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