3 papers
quant-ph2026
Orthogonal Quantum Krylov Diagonalisation
Hadi Rammal, Alexandre Perrin, Oumaya Ladhari +3
Quantum subspace-diagonalization methods, particularly Quantum Krylov Diagonalization (QKD), provide a promising route for computing low-energy spectra of quantum many-body Hamilto…
cond-mat.str-el2025
Inelastic scattering and transient localization from coupling to two-level systems
Hadi Rammal, Sergio Ciuchi, Simone Fratini
We consider an electron interacting locally with two-level systems (TLSs) as an archetypal model for charge transport in the presence of inelastic scatterers. To assess the importa…
cond-mat.str-el2023
Transient localization from the interaction with quantum bosons
H. Rammal, A. Ralko, S. Ciuchi +1
We carefully revisit the electron-boson scattering problem, going beyond popular semi-classical treatments. By providing numerically exact results valid at finite temperatures, we…