128 citations
- University of StuttgartDE7 papers
- Bielefeld UniversityDE4 papers
- Ames National LaboratoryUS3 papers
- Iowa State UniversityUS3 papers
- Forschungszentrum JülichDE2 papers
- Technische Universität BraunschweigDE2 papers
- Tohoku UniversityJP2 papers
- University Hospital MagdeburgDE2 papers
- University of FreiburgDE2 papers
- Brandeis UniversityUS1 paper
- Czech Academy of SciencesCZ1 paper
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6 papers · 1 filter
Numerically exact and approximate determination of energy eigenvalues for antiferromagnetic molecules using irreducible tensor operators and general point-group symmetries
R. Schnalle, J. Schnack
Numerical exact diagonalization is the ultimate method of choice in order to discuss static, dynamic, and thermodynamic properties of quantum systems. In this article we consider H…
A real-time study of diffusive and ballistic transport in spin-1/2 chains using the adaptive time-dependent density matrix renormalization group method
S. Langer, F. Heidrich-Meisner, J. Gemmer +2
Using the adaptive time-dependent density matrix renormalization group method, we numerically study the spin dynamics and transport in one-dimensional spin-1/2 systems at zero temp…
Frustration effects in antiferromagnetic molecules: the cuboctahedron
J. Schnack, R. Schnalle
Frustration of magnetic systems which is caused by competing interactions is the driving force of several unusual phenomena such as plateaus and jumps of the magnetization curve as…
Van Der Waals Revisited
K. Baerwinkel, J. Schnack
The van-der-Waals version of the second virial coefficient is not far from being exact if the model parameters are appropriately chosen. It is shown how the van-der-Waals resemblan…
Optimized perturbation theory for molecular antiferromagnets
R. Schnalle, J. Schnack
The energy spectra of mesoscopic, i.e. few-body quantum systems are of great interest in several areas of physics such as nuclear physics, cluster physics or magnetism. One way to…
Transport in anisotropic model systems analyzed by a correlated projection superoperator technique
Hendrik Weimer, Mathias Michel, Jochen Gemmer +1
By using a correlated projection operator, the time-convolutionless (TCL) method to derive a quantum master equation can be utilized to investigate the transport behavior of quantu…