18 citations · 20 across the 5 of their papers we have counts for
5 papers
Fusing matrix-product states with quantum Monte Carlo: reducing entanglement and sign problem at the same time
Gunnar Bollmark, Sam Mardazad, Johannes S. Hofmann +1
Systems of correlated quantum matter can be a steep challenge to any would-be method of solution. Matrix-product state (MPS)-based methods can describe 1D systems quasiexactly, but…
Resolving competition of charge-density wave and superconducting phases using the MPS+MF algorithm
Gunnar Bollmark, Thomas Köhler, Adrian Kantian
Materials with strong electronic correlations may exhibit a superconducting (SC) phase when tuning some parameters, but they almost always also have multiple other phases, typicall…
Transient superconductivity in three-dimensional Hubbard systems by combining matrix product states and self-consistent mean-field theory
Svenja Marten, Gunnar Bollmark, Thomas Köhler +2
We combine matrix-product state (MPS) and Mean-Field (MF) methods to model the real-time evolution of a three-dimensional (3D) extended Hubbard system formed from one-dimensional (…
Solving 2D and 3D lattice models of correlated fermions -- combining matrix product states with mean field theory
Gunnar Bollmark, Thomas Köhler, Lorenzo Pizzino +6
Correlated electron states are at the root of many important phenomena including unconventional superconductivity (USC), where electron-pairing arises from repulsive interactions.…
Dimensional crossover and phase transitions in coupled chains: Density matrix renormalization group results
Gunnar Bollmark, Nicolas Laflorencie, Adrian Kantian
Quasi-one-dimensional (Q1D) systems, i.e., three- and two-dimensional (3D/2D) arrays composed of weakly coupled one-dimensional lattices of interacting quantum particles, exhibit r…