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8 papers · 2 filters
Detection of topological phases by quasi-local operators
Wing Chi Yu, P. D. Sacramento, Yan Chao Li +2
It has been proposed recently by some of the authors that the quantum phase transition of a topological insulator like the SSH model may be detected by the eigenvalues and eigenvec…
One-dimensional Hubbard-Holstein model with finite range electron-phonon coupling
F. Hébert, Bo Xiao, V. G. Rousseau +2
The Hubbard-Holstein model describes fermions on a discrete lattice, with on-site repulsion between fermions and a coupling to phonons that are localized on sites. Generally, at ha…
Langevin Simulations of a Long Range Electron Phonon Model
G. G. Batrouni, Richard T. Scalettar
We present a Quantum Monte Carlo (QMC) study, based on the Langevin equation, of a Hamiltonian describing electrons coupled to phonon degrees of freedom. The bosonic part of the ac…
Charge Order in the Holstein Model on a Honeycomb Lattice
Y. -X. Zhang, W. -T. Chiu, N. C. Costa +2
The effect of electron-electron interactions on Dirac fermions, and the possibility of an intervening spin liquid phase between the semi-metal and antiferromagnetic (AF) regimes, h…
Manipulating quantum materials with quantum light
Martin Kiffner, Jonathan Coulthard, Frank Schlawin +2
We show that the macroscopic magnetic and electronic properties of strongly correlated electron systems can be manipulated by coupling them to a cavity mode. As a paradigmatic exam…
Pairing and superconductivity in the flat band: Creutz lattice
Rubem Mondaini, G. George Batrouni, Benoît Grémaud
We use unbiased numerical methods to study the onset of pair superfluidity in a system that displays flat bands in the noninteracting regime. This is achieved by using a known exam…