51 citations · 218 across the 15 of their papers we have counts for
17 papers
Finite-momentum pairing and magnetic halos in a spin-imbalanced Holstein model
Chunhan Feng, George Batrouni, Richard Scalettar
Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconductivity, Cooper pairing at finite-momentum driven by spin imbalance, remains difficult to study numerically in two dimensions. The…
Excitonic Stripe Order in the Two-Orbital Hubbard-Kanamori Model
Rafael D. Soares, Luke Staszewski, Chunhan Feng +1
Excitonic condensation and stripe formation are two distinct manifestations of electronic correlations. While excitonic order naturally arises in multi-orbital systems, stripe orde…
The SU(N) Holstein Model
Chunhan Feng, Linh Pham, George Batrouni +1
From the condensed matter physics perspective, the most natural single orbital tight-binding Hamiltonians, and hence the most widely studied, contain two fermionic species, corresp…
Magnetic, charge, and bond order in the two-dimensional Su-Schrieffer-Heeger-Holstein model
Max Casebolt, Chunhan Feng, Richard T. Scalettar +2
Most nonperturbative numerical studies of electron-phonon interactions focus on model Hamiltonians where the electrons interact with a phonon branch via a single type of microscopi…
Attractive Su-Schrieffer-Heeger-Hubbard Model on a Square Lattice Away from Half-Filling
Bo Xing, Chunhan Feng, Richard Scalettar +2
The Su-Schrieffer-Heeger (SSH) model, with bond phonons modulating electron tunneling, is a paradigmatic electron-phonon model that hosts an antiferromagnetic order to bond order t…
Finite-Temperature Quantum Matter with Rydberg or Molecule Synthetic Dimensions
Sohail Dasgupta, Chunhan Feng, Bryce Gadway +2
Synthetic dimension platforms offer unique pathways for engineering quantum matter. We compute the phase diagram of a many-body system of ultracold atoms (or polar molecules) with…
Metal-insulator transition and quantum magnetism in the SU(3) Fermi-Hubbard Model: Disentangling Nesting and the Mott Transition
Chunhan Feng, Eduardo Ibarra-García-Padilla, Kaden R. A. Hazzard +3
We use state-of-the-art numerical techniques to compute ground state correlations in the two-dimensional SU(3) Fermi Hubbard model at -filling, modeling fermions with three po…
Metal-insulator transition and magnetism of SU(3) fermions in the square lattice
Eduardo Ibarra-García-Padilla, Chunhan Feng, Giulio Pasqualetti +4
We study the SU(3) symmetric Fermi-Hubbard model (FHM) in the square lattice at -filling using numerically exact determinant quantum Monte Carlo (DQMC) and numerical linked-cl…
Enhancement of Charge Density Wave Correlations in a Holstein Model with an Anharmonic Phonon Potential
C. Kvande, C. Feng, F. Hébert +2
The Holstein Hamiltonian describes itinerant electrons whose site density couples to local phonon degrees of freedom. In the single site limit, at half-filling, the electron-phonon…
Bose-Einstein condensation in honeycomb dimer magnets and
Chunhan Feng, E. Miles Stoudenmire, Alexander Wietek
An asymmetric Bose-Einstein condensation (BEC) dome was observed in a recent experiment on the quantum dimer magnet , which is modeled by a "breathing" honeycomb l…
Order, Disorder and Monopole Confinement in the Spin- XXZ Model on a Pyrochlore Tube
Chunhan Feng, Alexander Wietek, E. Miles Stoudenmire +1
We study the ground state and thermodynamic properties of the spin-half XXZ model, with an Ising interaction and a transverse exchange interaction , on a pyrochlore tu…
Quantum Membrane Phases in Synthetic Lattices of Cold Molecules or Rydberg Atoms
Chunhan Feng, Hannah Manetsch, Valery G. Rousseau +2
We calculate properties of dipolar interacting ultracold molecules or Rydberg atoms in a semi-synthetic three-dimensional configuration -- one synthetic dimension plus a two-dimens…
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…
Electron-Phonon Interactions in Flat Band Systems
Chunhan Feng, Richard T. Scalettar
Existing Quantum Monte Carlo studies have investigated the properties of fermions on a Lieb (CuO) lattice interacting with an on-site, or near-neighbor electron-electron coupli…
Charge Density Waves on a Half-Filled Decorated Honeycomb Lattice
Chunhan Feng, Huaiming Guo, Richard T. Scalettar
Tight binding models like the Hubbard Hamiltonian are most often explored in the context of uniform intersite hopping . The electron-electron interactions, if sufficiently large…
Robustness of entropy plateaus: A case study of triangular Ising antiferromagnets
Owen Bradley, Chunhan Feng, Richard T. Scalettar +1
Residual entropy is a key feature associated with emergence in many-body systems. From a variety of frustrated magnets to the onset of spin-charge separation in Hubbard models and…