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cond-mat.str-el2025
Quantum Monte Carlo Simulation of Bipolaron Superconductivity in Extended Hubbard--Holstein models on Face-Centered-Cubic and Body-Centered-Cubic Lattices
G. D. Adebanjo, J. P. Hague, P. E. Kornilovitch
We investigate superlight pairing of bipolarons driven by electron-phonon interactions (EPIs) in face-center-cubic (FCC) and body-center-cubic (BCC) lattices using a continuous-tim…
cond-mat.str-el2012★ 13 cited
Mobile small bipolarons on a three-dimensional cubic lattice
A. R. Davenport, J. P. Hague, P. E. Kornilovitch
We use numerically exact quantum Monte Carlo (QMC) to compute the properties of three-dimensional bipolarons for interaction strengths where perturbation theory fails. For intermed…
cond-mat.str-el2009
Towards analytical approaches to the dynamical-cluster approximation
J. P. Hague
I introduce several simplified schemes for the approximation of the self-consistency condition of the dynamical cluster approximation. The applicability of the schemes is tested nu…