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- W2949583437 abstract "Consideration of vacuum polarization in quantum electrodynamics may affect the momentum dispersion relation for photons for a non-trivial background, due to appearance of curvature dependent terms in the effective action. We investigate the effect of a positive cosmological constant $Lambda$ on this at one loop order for stationary $Lambda$-vacuum spacetimes. To the best of our knowledge, so far it has been shown that $Lambda$ affects the propagation in a time dependent black hole spacetime. Here we consider the static de Sitter cosmic string and the Kerr-de Sitter spacetime to show that there can be some non-vanishing effect due to $Lambda$ for physical polarizations. Consistency of these results with the polarization sum rule is discussed." @default.
- W2949583437 created "2019-06-27" @default.
- W2949583437 creator A5012519746 @default.
- W2949583437 date "2015-01-05" @default.
- W2949583437 modified "2023-09-27" @default.
- W2949583437 title "Effect of a cosmological constant on propagation of vacuum polarized photons in stationary spacetimes" @default.
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- W2949583437 hasPublicationYear "2015" @default.
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