41 citations · 135 across the 11 of their papers we have counts for
11 papers
Magneto- and barocaloric properties of the ferro-antiferromagnetic sawtooth chain
N. Reichert, H. Schlüter, T. Heitmann +3
Materials that are susceptible to pressure and external magnetic fields allow the combined use of both for caloric processes. Here we report investigations of the ferromagnetic-ant…
Spin-1/2 XXZ chain coupled to two Lindblad baths: Constructing nonequilibrium steady states from equilibrium correlation functions
Tjark Heitmann, Jonas Richter, Fengping Jin +7
State-of-the-art approaches to extract transport coefficients of many-body quantum systems broadly fall into two categories: (i) they target the linear-response regime in terms of…
Real-time broadening of bath-induced density profiles from closed-system correlation functions
Tjark Heitmann, Jonas Richter, Jacek Herbrych +2
The Lindblad master equation is one of the main approaches to open quantum systems. While it has been widely applied in the context of condensed matter systems to study properties…
Spatiotemporal dynamics of classical and quantum density profiles in low-dimensional spin systems
Tjark Heitmann, Jonas Richter, Fengping Jin +3
We provide a detailed comparison between the dynamics of high-temperature spatiotemporal correlation functions in quantum and classical spin models. In the quantum case, our large-…
Nontrivial damping of quantum many-body dynamics
Tjark Heitmann, Jonas Richter, Jochen Gemmer +1
Understanding how the dynamics of a given quantum system with many degrees of freedom is altered by the presence of a generic perturbation is a notoriously difficult question. Rece…
Theoretical formation of carbon nanomembranes under realistic conditions using classical molecular dynamics
J. Ehrens, F. Gayk, P. Vorndamme +6
Carbon nanomembranes made from aromatic precursor molecules are free standing nanometer thin materials of macroscopic lateral dimensions. Although produced in various versions for…
Quantum quench dynamics in the transverse-field Ising model: A numerical expansion in linked rectangular clusters
Jonas Richter, Tjark Heitmann, Robin Steinigeweg
We study quantum quenches in the transverse-field Ising model defined on different lattice geometries such as chains, two- and three-leg ladders, and two-dimensional square lattice…
Density dynamics in the mass-imbalanced Hubbard chain
Tjark Heitmann, Jonas Richter, Thomas Dahm +1
We consider two mutually interacting fermionic particle species on a one-dimensional lattice and study how the mass ratio between the two species affects the (equilibration) dy…
Finite-size scaling of typicality-based estimates
J. Schnack, J. Richter, T. Heitmann +1
According to the concept of typicality, an ensemble average can be accurately approximated by an expectation value with respect to a single pure state drawn at random from a high-d…
Selected applications of typicality to real-time dynamics of quantum many-body systems
Tjark Heitmann, Jonas Richter, Dennis Schubert +1
Loosely speaking, the concept of quantum typicality refers to the fact that a single pure state can imitate the full statistical ensemble. This fact has given rise to a rather simp…
Young's moduli of carbon materials investigated by various classical molecular dynamics schemes
F. Gayk, J. Ehrens, T. Heitmann +3
Classical carbon potentials together with classical molecular dynamics are employed to calculate structures and physical properties of such carbon-based materials where quantum mec…