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gr-qc2024
Revisiting light propagation over (loop) quantum Universe
Aliasghar Parvizi, Tomasz Pawłowski
We investigate the propagation of electromagnetic waves over a quantum cosmological background, aiming to uncover potential signatures of quantum gravity through modifications to t…
gr-qc2024★ 3 cited
Photon rings in the metamaterial analog of a gravitomagnetic monopole
A. Parvizi, H. Forghani-Ramandy, E. Rahmani +1
After studying null geodesics in the equatorial plane in NUT spacetime, we show that there are unstable photon rings in this plane. Next we transform the metric of this plane to th…