From the 2 of 4 linked papers with an AI index.
4 papers
Prism Effect in Quantum Gravity
Aliasghar Parvizi, Tomasz PawÅowski
The paper develops a general framework using an extended Born-Oppenheimer approximation to describe how electromagnetic waves propagate in a quantum‑gravity-modified spacetime, pre…
Revisiting light propagation over (loop) quantum Universe
Aliasghar Parvizi, Tomasz PawÅowski
We investigate the propagation of electromagnetic waves over a quantum cosmological background, aiming to uncover potential signatures of quantum gravity through modifications to t…
Revisiting semiclassical effective dynamics for quantum cosmology
Maciej Kowalczyk, Tomasz PawÅowski
We revise the technique of semiclassical effective dynamics, in particular reexamining the evaluation of Poisson structure of the so-called central moments capturing quantum correc…
Primodial power spectrum in loop quantum cosmology for different regularizations
Maciej Kowalczyk, Guillermo A. Mena Marugán, Tomasz PawÅowski
In Loop Quantum Cosmology, the quantization of the Hamiltonian constraint involves a regularization procedure which is affected by certain ambiguities. Moreover, different regulari…