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5 papers · 2 filters
Charge Singlets and Orbital-Selective Charge Density Wave Transitions
Yuxi Zhang, Chunhan Feng, Rubem Mondaini +2
The possibility of "orbitally selective Mott transitions" within a multiband Hubbard model, in which one orbital with large on-site electron-electron repulsion is insulating…
Phase Diagram of the Su-Schrieffer-Heeger-Hubbard model on a square lattice
Chunhan Feng, Bo Xing, Dario Poletti +2
The Hubbard and Su-Schrieffer-Heeger Hamiltonians (SSH) are iconic models for understanding the qualitative effects of electron-electron and electron-phonon interactions respective…
Engineering many-body quantum Hamiltonians with non-ergodic properties using quantum Monte Carlo
Nyayabanta Swain, Ho-Kin Tang, Darryl Chuan Wei Foo +5
We present a computational framework to identify Hamiltonians of interacting quantum many-body systems that host non-ergodic excited states. We combine quantum Monte Carlo simulati…
Transport and spectroscopic signatures of a disorder-stabilized metal in two-dimensional frustrated Mott insulators
Madhuparna Karmakar, Nyayabanta Swain
Frustrated Mott insulators such as transition metal dichalcogenides present an ideal platform for the experimental realization of externally tuned insulator-metal transition. In th…
Quantum Monte Carlo study of an anharmonic Holstein model
G. Paleari, F. Hébert, B. Cohen-Stead +3
We study the effects of anharmonicity on the physics of the Holstein model, which describes the coupling of itinerant fermions and localized quantum phonons, by introducing a quart…