680 citations · 801 across the 11 of their papers we have counts for
11 papers
Adaptive Pseudoboson Density-Matrix Renormalization Group for Dilute 2D Systems
Fabian J. Pauw, Thomas Köhler, Ulrich Schollwöck +1
Simulating strongly correlated systems in two dimensions is notoriously challenging due to rapid entanglement growth and frustration. Here, we introduce the adaptive projected-puri…
A logical qubit-design with geometrically tunable error-resistibility
Reja H. Wilke, Leonard W. Pingen, Thomas Köhler +1
Breaking the error-threshold would mark a milestone in establishing quantum advantage for a wide range of relevant problems. One possible route is to encode information redundantly…
Matrix-product-state-based band-Lanczos solver for quantum cluster approaches
Sebastian Paeckel, Thomas Köhler, Salvatore R. Manmana +1
We present matrix-product state (MPS) based band Lanczos method as solver for quantum cluster methods such as the variational cluster approximation. While a naïve implementation of…
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…
Stable bipolarons in open quantum systems
Mattia Moroder, Martin Grundner, François Damanet +5
Recent advances in numerical methods significantly pushed forward the understanding of electrons coupled to quantized lattice vibrations. At this stage, it becomes increasingly imp…
Superconducting pairing from repulsive interactions of fermions in a flat-band system
Iman Mahyaeh, Thomas Köhler, Annica M. Black-Schaffer +1
Fermion systems with flat bands can boost superconductivity by enhancing the density of states at the Fermi level. We use quasiexact numerical methods to show that repulsive intera…
Efficient and Flexible Approach to Simulate Low-Dimensional Quantum Lattice Models with Large Local Hilbert Spaces
Thomas Köhler, Jan Stolpp, Sebastian Paeckel
Quantum lattice models with large local Hilbert spaces emerge across various fields in quantum many-body physics. Problems such as the interplay between fermions and phonons, the B…
Detecting superconductivity out-of-equilibrium
Sebastian Paeckel, Benedikt Fauseweh, Alexander Osterkorn +3
Recent pump-probe experiments on underdoped cuprates and similar systems suggest the existence of a transient superconducting state above . This poses the question ho…
Time-evolution methods for matrix-product states
Sebastian Paeckel, Thomas Köhler, Andreas Swoboda +3
Matrix-product states have become the de facto standard for the representation of one-dimensional quantum many body states. During the last few years, numerous new methods have bee…
Formation of Spatial Patterns by Spin-selective Excitations of Interacting Fermions
Thomas Köhler, Sebastian Paeckel, Constantin Meyer +1
We describe the formation of charge- and spin-density patterns induced by spin-selective photoexcitations of interacting fermionic systems in the presence of a microstructure. As a…
Automated construction of -invariant matrix-product operators from graph representations
Sebastian Paeckel, Thomas Köhler, Salvatore R. Manmana
We present an algorithmic construction scheme for matrix-product-operator (MPO) representations of arbitrary -invariant operators whenever there is an expression of the local…