20–24 Jan 2025
University of Bern
Europe/Zurich timezone

Confronting the sign problem for frustrated magnets

22 Jan 2025, 14:45
45m
Lecture Hall 099 (ExWi Building) (University of Bern)

Lecture Hall 099 (ExWi Building)

University of Bern

University of Bern Exakte Wissenschaften (ExWi) Sidlerstrasse 5 3012 Bern Switzerland

Speaker

Fakher Assaad

Description

Kitaev materials are a class of crystals that are believed to show fractionalization in terms of Majorana fermions. These models do not allow for negative sign free formulations. Here we show that by optimizing the path integral formulation, we can reach temperature scales down to 40K, a scale relevant to experiments. In fact we will show that we can reproduce experimental results for a specific Kitaev material RuCl3. If time allows I will also touch on Kondo lattice physics, and its relation to U(1) gauge theories.

Author

Presentation materials