680 citations · 933 across the 30 of their papers we have counts for
19 papers · 1 filter
Spectral signatures of hidden order and hidden quantum critical points
Reja H. Wilke, Henning Schlömer, Sebastian Paeckel +2
Hidden-order phases elude the conventional Ginzburg-Landau framework: although they spontaneously break symmetry, their order remains invisible to standard local two-point correlat…
Two-channel physics in a lightly doped antiferromagnetic Mott insulator revealed by two-hole spectroscopy
Pit Bermes, Sebastian Paeckel, Annabelle Bohrdt +2
Understanding pairing in the strong-coupling regime of doped Mott insulators remains an open problem in the context of cuprate superconductors. We perform ultra-high resolution num…
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…
Large Isolated Stripes on Short 18-leg - Cylinders
Tizian Blatz, Sebastian Paeckel, Ulrich Schollwöck +2
Spin-charge stripes belong to the most prominent low-temperature orders besides superconductivity in high-temperature superconductors. This phase is particularly challenging to stu…
Towards effective models for low-dimensional cuprates: From ground state Hamiltonian reconstruction to spectral functions
Hannah Lange, Tizian Blatz, Ulrich Schollwöck +2
Understanding which minimal effective model captures the essential physics of cuprates is a key step towards unraveling the mechanism behind high- superconductivity. Recent me…
Spectral decomposition and high-accuracy Greens functions: Overcoming the Nyquist-Shannon limit via complex-time Krylov expansion
Sebastian Paeckel
The accurate computation of low-energy spectra of strongly correlated quantum many-body systems, typically accessed via Green's-functions, is a long-standing problem posing enormou…
Phonon state tomography of electron correlation dynamics in optically excited solids
Mattia Moroder, Matteo Mitrano, Ulrich Schollwöck +2
We introduce phonon state tomography (PST) as a diagnostic probe of electron dynamics in solids whose phonons are optically excited by a laser pulse at initial time. Using a projec…
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…
Tuning magnetoelectricity in a mixed-anisotropy antiferromagnet
Ellen Fogh, Bastian Klemke, Manfred Reehuis +20
Control of magnetization and electric polarization is attractive in relation to tailoring materials for data storage and devices such as sensors or antennae. In magnetoelectric mat…
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…
Formation of CuO sublattices by suppression of interlattice correlations in tetragonal CuO
Max Bramberger, Benjamin Bacq-Labreuil, Martin Grundner +4
We investigate the tetragonal phase of the binary transition metal oxide CuO (t-CuO) within the context of cellular dynamical mean-field theory. Due to its strong antiferromagnetic…
Comparative Study of State-of-the-Art Matrix-Product-State Methods for Lattice Models with Large Local Hilbert Spaces
Jan Stolpp, Thomas Köhler, Salvatore R. Manmana +3
Lattice models consisting of high-dimensional local degrees of freedom without global particle-number conservation constitute an important problem class in the field of strongly co…
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…
Tripartite information, scrambling, and the role of Hilbert space partitioning in quantum lattice models
Oskar Schnaack, Niklas Bölter, Sebastian Paeckel +3
For the characterization of the dynamics in quantum many-body systems the question how information spreads and becomes distributed over the constituent degrees of freedom is of fun…
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…
Relaxation of photoexcitations in polaron-induced magnetic microstructures
Thomas Köhler, Sangeeta Rajpurohit, Ole Schumann +7
We investigate the evolution of a photoexcitation in correlated materials over a wide range of time scales. The system studied is a one-dimensional model of a manganite with correl…