163 citations · 635 across the 19 of their papers we have counts for
20 papers
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…
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…
Flowing to Normality and the Fate of the Single Ring Theorem
Joshua Feinberg, Roman Riser, Richard Scalettar +1
Random non-hermitian matrix ensembles with double-sided rotation invariance obey, in the limit of large matrix size, the Single Ring Theorem, which states that the support of the m…
Parallel Scan Recurrent Neural Quantum States for Scalable Variational Monte Carlo
Ejaaz Merali, Mohamed Hibat-Allah, Mohammad Kohandel +2
Neural-network quantum states have emerged as a powerful variational framework for quantum many-body systems, with recent progress often driven by massively parallel architectures…
The Two Orbital, Interacting Hatano-Nelson Model
Jonah Huang, Rubem Mondaini, Nancy Aggarwal +1
The single orbital, one-dimensional, Hatano-Nelson Hamiltonian provides deep insight into the physics of non-Hermiticity, resulting from asymmetric left/right hopping, and its conn…
The optical Su-Schrieffer-Heeger model on a triangular lattice
Max Casebolt, Sohan Malkaruge Costa, Benjamin Cohen-Stead +2
We study the triangular lattice optical Su-Schrieffer-Heeger (SSH) model using determinant quantum Monte Carlo. By varying the model's carrier concentration, electron-phonon coupli…
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…
Optimizing the Critical Temperature and Superfluid Density of a Metal-Superconductor Bilayer
Yutan Zhang, Philip M. Dee, Benjamin Cohen-Stead +3
A promising path to realizing higher superconducting transition temperatures is the strategic engineering of artificial heterostructures. For example, quantum materials could…
Learning by Confusion: The Phase Diagram of the Holstein Model
George Issa, Owen Bradley, Ehsan Khatami +1
We employ the "learning by confusion" technique, an unsupervised machine learning approach for detecting phase transitions, to analyze quantum Monte Carlo simulations of the two-di…
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…
Effect of Strain on Charge Density Wave Order in the Holstein Model
B. Cohen-Stead, N. C. Costa, E. Khatami +1
We investigate charge ordering in the Holstein model in the presence of anisotropic hopping, , as a model of the effect of strain on charge density wave (CDW)…
Doping evolution of spin and charge excitations in the Hubbard model
Y. F. Kung, E. A. Nowadnick, C. J. Jia +4
To shed light on how electronic correlations vary across the phase diagram of the cuprate superconductors, we examine the doping evolution of spin and charge excitations in the sin…
Geometry Dependence of the Sign Problem
V. I. Iglovikov, E. Khatami, R. T. Scalettar
The sign problem is the fundamental limitation to quantum Monte Carlo simulations of the statistical mechanics of interacting fermions. Determinant quantum Monte Carlo (DQMC) is on…
Determinant quantum Monte Carlo study of the two-dimensional single-band Hubbard-Holstein model
S. Johnston, E. A. Nowadnick, Y. F. Kung +3
We have performed numerical studies of the Hubbard-Holstein model in two dimensions using determinant quantum Monte Carlo (DQMC). Here we present details of the method, emphasizing…
Competition between antiferromagnetic and charge density wave order in the half filled Hubbard-Holstein model
E. A. Nowadnick, S. Johnston, B. Moritz +2
We present a determinant quantum Monte Carlo study of the competition between instantaneous on-site Coulomb repulsion and retarded phonon-mediated attraction between electrons, as…
Cluster solver for dynamical mean-field theory with linear scaling in inverse temperature
E. Khatami, C. R. Lee, Z. J. Bai +2
Dynamical mean field theory and its cluster extensions provide a very useful approach for examining phase transitions in model Hamiltonians, and, in combination with electronic str…
Quantum Monte Carlo study of the two-dimensional fermion Hubbard Model
C. N. Varney, C. -R. Lee, Z. J. Bai +3
We report large scale determinant Quantum Monte Carlo calculations of the effective bandwidth, momentum distribution, and magnetic correlations of the square lattice fermion Hubbar…
"Single Ring Theorem" and the Disk-Annulus Phase Transition
Joshua Feinberg, R. Scalettar, A. Zee
Recently, an analytic method was developed to study in the large limit non-hermitean random matrices that are drawn from a large class of circularly symmetric non-Gaussian prob…
One particle spectral weight of the three dimensional single band Hubbard model
M. Ulmke, R. T. Scalettar, A. Nazarenko +1
Dynamic properties of the three-dimensional single-band Hubbard model are studied using Quantum Monte Carlo combined with the maximum entropy technique. At half-filling, there is a…