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Quantum gravitational optics: the induced phase
N. Ahmadi, M. Nouri-Zonoz
The geometrical approximation of the extended Maxwell equation in curved spacetime incorporating interactions induced by the vacuum polarization effects is considered. Taking into…
Fermat's principle in quantum gravitational optics
N. Ahmadi, S. Khoeini-Moghaddam, M. Nouri-Zonoz
Interactions incorporating the vacuum polarization effects in curved backgrounds modify the null cone structure in such a way that the photon trajectories would not be the space-ti…
Quantum gravitational optics in the field of a gravitomagnetic monopole
N. Ahmadi, S. Khoeini-Moghaddam, M. Nouri-Zonoz
Vacuum polarization in QED in a background gravitational field induces interactions which {\it effectively} modify the classical picture of light rays as the null geodesics of spac…
Quantum gravitational optics: Effective Raychaudhuri equation
N. Ahmadi, M. Nouri-Zonoz
Vacuum polarization in QED in a background gravitational field induces interactions which {\it effectively} modify the classical picture of light rays, as the null geodesics of spa…
Topology, Mass and Casimir energy
N. Ahmadi, M. Nouri-Zonoz
The vacuum expectation value of the stress energy tensor for a massive scalar field with arbitrary coupling in flat spaces with non-trivial topology is discussed. We calculate the…