4 papers
Prism Effect in Quantum Gravity
Aliasghar Parvizi, Tomasz Pawłowski
Modifications to the dispersion relation of electromagnetic (EM) waves are a central probe in the search for quantum gravitational effects. In this work, we construct a general fra…
Primodial power spectrum in loop quantum cosmology for different regularizations
Maciej Kowalczyk, Guillermo A. Mena Marugán, Tomasz Pawłowski
In Loop Quantum Cosmology, the quantization of the Hamiltonian constraint involves a regularization procedure which is affected by certain ambiguities. Moreover, different regulari…
Revisiting semiclassical effective dynamics for quantum cosmology
Maciej Kowalczyk, Tomasz Pawłowski
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…
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…