21 citations · 50 across the 6 of their papers we have counts for
6 papers
Contour-time approach to the disordered Bose-Hubbard model in the strong coupling regime
Ali Mokhtari-Jazi, Matthew R. C. Fitzpatrick, Malcolm P. Kennett
There has been considerable interest in the disordered Bose Hubbard model (BHM) in recent years, particularly in the context of thermalization and many-body localization. We develo…
Essentially exact numerical modelling of flux qubit chains subject to charge and flux noise
Matthew R. C. Fitzpatrick, Jack Raymond, Malcolm P. Kennett
We present an essentially exact numerical method for modelling flux qubit chains subject to charge and flux noise. We define an essentially exact method as one that introduces erro…
Phase and group velocities for correlation spreading in the Mott phase of the Bose-Hubbard model in dimensions greater than one
Ali Mokhtari-Jazi, Matthew R. C. Fitzpatrick, Malcolm P. Kennett
Lieb-Robinson and related bounds set an upper limit on the rate of spreading of information in non-relativistic quantum systems. Experimentally, they have been observed in the spre…
Interacting quantum Hall states in a finite graphene flake and at finite temperature
Hank Chen, Matthew R. C. Fitzpatrick, Sujit Narayanan +2
The integer quantum Hall states at fillings and in monolayer graphene have drawn much attention as they are generated by electron-electron interactions. Here we ex…
Contour-time approach to the Bose-Hubbard model in the strong coupling regime: Studying two-point spatio-temporal correlations at the Hartree-Fock-Bogoliubov level
Matthew R. C. Fitzpatrick, Malcolm P. Kennett
We develop a formalism that allows the study of correlations in space and time in both the superfluid and Mott insulating phases of the Bose-Hubbard Model. Specifically, we obtain…
Light-cone like spreading of single-particle correlations in the Bose-Hubbard model after a quantum quench in the strong coupling regime
Matthew R. C. Fitzpatrick, Malcolm P. Kennett
We study the spreading of correlations in space and time after a quantum quench in the Bose Hubbard model. We derive equations of motion for the single-particle Green's function wi…