Vacuum Polarization in the Spacetime of a Scalar-Tensor Cosmic String
Bezerra, V. B. · Filho, R. M. Teixeira · Grebot, G. · Guimaraes, M. E. X.
Original · EN
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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