5 papers
Thermodynamics of finite magnetic two-level systems
Peter Borrmann, Heinrich Stamerjohanns, Eberhard Hilf +3
We use Monte Carlo simulations to investigate the thermodynamical behaviour of aggregates consisting of few superparamagnetic particles in a colloidal suspension. The potential ene…
Simple Quantum Mechanical Phenomena and the Feynman Real Time Path Integral
A. Dullweber, E. R. Hilf, E. Mendel
The path integral formalism gives a very illustrative and intuitive understanding of quantum mechanics but due to its difficult sum over phases one usually prefers Schrödinger's ap…
Structures and Stabilities of H3+(H2)n Clusters (n=1-11)
B. Diekmann, P. Borrmann, E. R. Hilf
Geometries and energies for H3+(H2)n clusters (n = 0, ..., 11) have been calculated using standard "ab initio" methods. Up to clusters with n = 6, four different Pople basis sets (…
Magnetism of small transition metal clusters and the effects of isomerisation
Peter Borrmann, Bernd Diekmann, Eberhard R. Hilf +1
We investigate the magnetic properties of small transition metal clusters using a simple statistical model, which requires some input data from ab initio spin-density functional ca…
New enhancements to Feynmans Path Integral for fermions
Peter Borrmann, Eberhard R. Hilf
We show that the computational effort for the numerical solution of fermionic quantum systems, occurring e.g., in quantum chemistry, solid state physics, field theory in principle…