30 citations · 108 across the 12 of their papers we have counts for
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The half-filled optical Su-Schrieffer-Heeger-Hubbard model with uniaxial strain
Jonah Huang, James Neuhaus, Benjamin Cohen-Stead +2
Strain offers a direct route to control electronic phases by altering bond lengths, hopping amplitudes, and lattice symmetries. These aspects make electron-phonon (e-ph) coupled sy…
A DQMC study of the spectral and conductive properties of the two-dimensional Holstein model
J. Neuhaus, B. Cohen-Stead, N. Mannella +1
We study the dynamical properties of the two-dimensional square lattice Holstein Hamiltonian using numerically exact determinant quantum Monte Carlo simulations. In particular, we…
Charge Order in the half-filled bond-Holstein Model
Charles Jordan, George Issa, Ehsan Khatami +3
We use determinant quantum Monte Carlo to study the half-filled `bond-Holstein' model on a square lattice. We find that the model exhibits a charge-density-wave (CDW) phase transit…
Antiferromagnetism and Kekulé valence bond order in the honeycomb optical Su-Schrieffer-Heeger-Hubbard model
Sohan Malkaruge Costa, Benjamin Cohen-Stead, Steven Johnston
The precise role of e-ph coupling in graphene and related materials on a honeycomb lattice is not yet fully understood, despite extensive research on these systems. Here, we perfor…
Antiferromagnetic and bond-order-wave phases in the half-filled two-dimensional optical Su-Schrieffer-Heeger-Hubbard model
Andy Tanjaroon Ly, Benjamin Cohen-Stead, Steven Johnston
Electron-phonon (-ph) interactions arise in many strongly correlated quantum materials from the modulation of the nearest-neighbor hopping integrals, as in the celebrated Su-Sch…
Kekulé valence bond order in the honeycomb lattice optical Su-Schrieffer-Heeger Model and its relevance to Graphene
Sohan Malkaruge Costa, Benjamin Cohen-Stead, Steven Johnston
We perform sign-problem-free determinant quantum Monte Carlo simulations of the optical Su-Schrieffer-Heeger (SSH) model on a half-filled honeycomb lattice. In particular, we inves…
Fluctuating charge-density-wave correlations in the three-band Hubbard model
P. Mai, B. Cohen-Stead, T. A. Maier +1
The high-temperature superconducting cuprates host unidirectional spin- and charge-density-wave orders that can intertwine with superconductivity in non-trivial ways. While the cha…
Classical dynamics of the antiferromagnetic Heisenberg spin ladder
David A. Dahlbom, Jinu Thomas, Steven Johnston +2
We employ a classical limit grounded in SU(4) coherent states to investigate the temperature-dependent dynamical spin structure factor of the ladder consisting of weakly…
SmoQyDQMC.jl: A flexible implementation of determinant quantum Monte Carlo for Hubbard and electron-phonon interactions (version 2.0 release)
Benjamin Cohen-Stead, Shruti Agarwal, Sohan Malkaruge Costa +6
We introduce version 2.0 of the SmoQyDQMC.jl package, a Julia implementation of the determinant quantum Monte Carlo algorithm. SmoQyDQMC.jl supports generalized tight-binding Hamil…
A perspective on machine learning and data science for strongly correlated electron problems
S. Johnston, E. Khatami, R. T. Scalettar
Numerical approaches to the correlated electron problem have achieved considerable success, yet are still constrained by several bottlenecks, including high order polynomial or exp…
Determinant quantum Monte Carlo study of exciton condensation in the bilayer Hubbard model
Louk Rademaker, Steve Johnston, Jan Zaanen +1
We studied the possibility of exciton condensation in a strongly correlated bilayer extended Hubbard model using Determinant Quantum Monte Carlo. To model both the onsite repulsion…