**Polynomial Invariants of Three-Qubit Systems** - Markus Grassl

Polynomial invariants provide a tool to characterise quantum states
with respect to local unitary transformations. Unfortunately, the
situation becomes very complicated already for mixed states of three
qubits due to combinatorial explosion.
After an introduction to the mathematical background and general
tools, the talk will present preliminary results for mixed quantum
states and Hamiltonians for three-qubit systems.
The talk is based on joint work in progress with Robert Zeier.