Vacuum Polarization in the Spacetime of a Scalar-Tensor Cosmic String
V. B. Bezerra, R. M. Teixeira Filho, G. Grebot, M. E. X. Guimaraes
Abstract
We study the vacuum polarization effect in the spacetime generated by a magnetic flux cosmic string in the framework of a scalar-tensor gravity. The vacuum expectation values of the energy-momentum tensor of a conformally coupled scalar field are calculated. The dilaton's contribution to the vacuum polarization effect is shown explicitly.
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