From the 1 of 3 linked papers with an AI index.
3 papers
gr-qc2026
Fermionic Backreaction on Quantum Spacetimes: Cosmological Implications
Y. Tavakoli, A. Khaleghi Ardabili, S. Mosaddegh
The paper reviews a Hamiltonian approach to Dirac fermions on quantum cosmological spacetimes in loop quantum cosmology, showing how fermionic backreaction leads to mode‑dependent…
gr-qc2026
Canonical Clock Sectors and Relational Frame Equivalence in Brans--Dicke Theory
Yaser Tavakoli, Jerzy Lewandowski
We investigate the equivalence of the Jordan and Einstein frames of the Brans--Dicke theory before and after relational deparametrization of the constrained Hamiltonian system. Alt…
gr-qc2025
Fermions in a loop quantum cosmological spacetime
Yaser Tavakoli, Ahad K. Ardabili, Sara Mosaddegh
We present a detailed Hamiltonian treatment of an inhomogeneous fermionic perturbation propagating on a closed FLRW spacetime quantized via LQC. Expanding the fermion in spinor har…