Research Group: Correlated Electrons and Topology

Welcome to our group webpage!  We focus on theoretical and numerical studies of condensed matter physics. Below you find links to the research and teaching activities of our group.

What's new?

• 07.09.2023 -- Joint work with Sreejith Chulliparambil (TU Dresden) and Hua-Chen Zhang (TU Dresden -> Aarhus) on Symmetry-protected topological phases, conformal criticalities, and duality in exactly solvable SO(n) spin chains is published in Phys. Rev. B; see link. Short summary: We generalized the transverse-field Ising chain to a family of SO(n)-symmetric spin chains. We further characterized the critical points as well as symmetry-protected topological phases in these paradigmatic models.
• 20.07.2023 -- Invited talk Klein bottle partition function and tensor networks at the Advanced Study Group: Tensor Network Approaches to Many-Body Systems (link) at the IBS Center for Theoretical Physics of Complex Systems in Daejeon, Korea. See video.
• 14.04.2023 -- Joint work with Yueshui Zhang (IOP, CAS), Anton Hulsch (TU Dresden), Hua-Chen Zhang (TU Dresden -> Aarhus), Wei Tang (Ghent), and Lei Wang (IOP, CAS) on Universal scaling of Klein bottle entropy near conformal critical points is published in Phys. Rev. Lett.; see link. Short summary: We have shown that the Klein bottle entropy for conformal field theories perturbed by a relevant operator is a universal function of the dimensionless coupling constant. This universal scaling provides an efficient approach to extract the scaling dimension of lattice operators via data collapse.

See also: past news