3 papers
gr-qc2026
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…
gr-qc2025
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…
gr-qc2024
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…