## Lectures: Summer semester 2023

The 2023 summer semester runs from **April 1st 2023 - September 30th 2023**. Lectures run from April 3rd 2023 to Mai 26th 2023 and again from June 5th to July 15th 2023.

## General Lectures

lecture: | Introduction to topological materials | |

lecturer: | Dr. Dmitriy Efremov (IFW) | |

time and location: | Lecture: Wednesday 14:50 - 16:20 B3E.26, IFW, Hemholzstrasse 20, | |

content: | Simple models of topological insulators in 1D and 2D. Physical-mathematical concepts: Berry phase, Chern invariants. Thouless adiabatic pumping mechanism. Polarization. Z2 topological insulators. Topologically protected edge states. One way (chiral) and two-way (helical) edge states. Topological superconductors. Majoranas, Weyl materials.11. Selected topics of strongly correlated topological phases. | |

start: | April, 5th |

lecture: | Chaos and Quantum Chaos | |

lecturer: | Prof. Dr. Roland Ketzmerick (TUD) | |

time: | Lecture: Mondays 13:00-14:30, Tuesdays 11:10-12:40; Tutorial: Tuesday 11:10-12:40 | |

location: | BZW A120 Zellescher Weg 17 | |

content: | Hamiltonian chaos: dynamical systems, KAM-theorem, origin of chaotic dynamics, transport in phase space. Quantum signatures of chaos: spectra, eigenstates, semiclassics, Gutzwiller trace formula, random matrix theory, experimental systems. Computer simulations will be used for visualization. | |

start: | April, 3rd |

lecture: | Solid State Theory | |

lecturer: | Jun.-Prof. Hong-Hao Tu (TUD) | |

time: | Lecture: Tuesdays 13:00-14:30 Thursday 11:10-12:40; Tutorial: Thursday 11:10-12:40 | |

location: | BZW/A120 | |

content: | The topics covered in this course include lattice dynamics, electron gas, band theory, transport theory, quantum Hall effect, and basics of quantum magnetism. | |

start: | April, 4th |

lecture: | Theory of frustated magnetism | |

lecturer: | Dr. Bernhard Frank, Prof. Dr. Matthias Vojta (TUD) | |

time: | Lecture: Monday 11:10 - 12:40, Friday 09:20 - 10:50; Tutorial: Friday 09:20 - 10:50 | |

location: | BZW/A120 | |

content: | 1. Introduction 2. Local moments and microscopic models 3. Spin-wave theory: Collinear vs. non-collinear states 4. Classical degeneracies and order by disorder 5. Spin ice 6. Quantum spin liquids 7. Quenched disorder and glassiness 8. Frustration in metals 9. Quantum criticality and frustration |

## Specialised Lectures

lecture: | Quantum Compulational Complexity | |

lecturer: | Prof. Dr. Frank Großmann (TUD) | |

time: | Lecture: Wednesday 9:20-10:50 | |

location: | SE2/201/H | |

content: | -Introduction: Basic notions, classic problems, complexity classes |

lecture: | Nonlinear Dynamics | |

lecturer: | Prof. Dr. Holger Kantz, Jin Yan (MPIPKS) | |

time: | Lecture: Monday 14:50-16:20 | |

location: | lecture hall 4, MPIPKS | |

content: | Nonlinear dynamical system: physical context, discrete time systems, fixed points and their bifurcations, chaos. characterization of chaotic motion: fractal dimensions, Lyapunov exponents, entropies. Limits of predictability. Examples from physics and elsewhere, numerical integration. | |

start: | April, 17th |

lecture: | Molecular Nanostructures | |

lecturer: | Prof. Dr. Bernd Büchner | |

time: | Mondays 9:20-10:50 | |

location: | IFW B3E.26 | |

content: | The lecture will address the following aspects of molecular nanostructures: | |

start: | April, 3rd |