Antiferromagnetic spin chains -- a paradigm in many-body quantum physics
Veranstaltungsart:
- Kolloquium
Vortrag im Kolloquium von Prof. Dr. Frank Göhmann.
Prof. Dr. Frank Göhmann
The Heisenberg-Ising spin chain is a one-dimensional variant of the fundamental model for the antiferromagnetism of insulators. Its integrable structure makes it possible to evaluate some of the functional integrals that determine its free energy, its reduced density matrix or its dynamical two-point correlation functions more or less explicitly. I shall attempt to explain the origin of this model in physics, its mathematical structure and some of the recent progress in understanding its dynamical properties.