3 papers
cond-mat.str-el2026
Subbath Cluster Dynamical Mean-Field Theory
A. de Lagrave, D. Sénéchal, M. Charlebois
Cluster Dynamical Mean-Field Theory (CDMFT) with an Exact Diagonalization (ED) impurity solver faces exponential scaling limitations from the Hilbert space dimension. We introduce…
cond-mat.str-el2025
Monte Carlo Diagonalization for Hubbard Model
B. Bernard, M. Charlebois
The Hubbard model has often been studied with exact diagonalization (ED). This impurity solver is fundamentally limited by the exponential scaling of the Fock space. To address thi…
cond-mat.str-el2024
An occupation number quantum subspace expansion approach to compute the single-particle Green function: an opportunity for noise filtering
B. Gauthier, P. Rosenberg, A. Foley +1
We introduce a hybrid quantum-classical algorithm to compute the Green function for strongly correlated electrons on noisy intermediate-scale quantum (NISQ) devices. The technique…