"Ultracold atoms in unconventional lattices: frustration, localization, and topology" (Prof. Ulrich Schneider)
- Datum: 09.06.2026
- Uhrzeit: 14:30
- Vortragende(r): Prof. Ulrich Schneider
- University of Cambridge, UK
- Ort: Max Planck Institute of Quantum Optics, Hans-Kopferman-Straße 1, 85748 Garching
- Raum: Herbert Walther Lecture Hall
- Gastgeber: MPQ
Unconventional optical lattices unlock novel many-body physics. We review experiments using ultracold bosonic atoms in fully frustrated triangular and Kagome lattices, and eightfold symmetric 2D quasicrystals.
Geometric frustration suppresses superfluidity, thereby significantly reducing the critical interaction strength for Mott transition (triangular) or giving rise to new many-body phases (Kagome). In quasicrystals, many foundational concepts such as Blochwaves or Brillouin zones are not applicable, giving rise to novel localization phenomena such as the 2D Bose glass and fractal band structures with complex topologies.