5 papers
Far-from-equilibrium topological phase transition in one dimension
Ze-Min Huang, Gustav John, Sebastian Diehl
We uncover a mechanism for far-from-equilibrium topological phase transitions, via a one-dimensional compact phase model evolving deterministically from random initial conditions.…
Anomaly and symmetry-charge flow in mixed states
Ze-Min Huang, Sebastian Diehl
The -dimensional chiral anomaly is a paradigmatic exact result in quantum field theory, traditionally formulated for zero-temperature pure states where it arises from spectr…
Topological response in open quantum systems with weak symmetries
Ze-Min Huang, Sebastian Diehl, Xiao-Qi Sun
In open quantum systems, the interaction of the system with its environment gives rise to two types of symmetry: a strong one, where the system's symmetry charge is conserved exact…
Coherent information as a mixed-state topological order parameter of fermions
Ze-Min Huang, Luis Colmenarez, Markus Müller +1
Quantum error correction protects quantum information against decoherence provided the noise strength remains below a critical threshold. This threshold marks the critical point fo…
Interaction-induced topological phase transition at finite temperature
Ze-Min Huang, Sebastian Diehl
We demonstrate the existence of topological phase transitions in interacting, symmetry-protected quantum matter at finite temperatures. Using a combined numerical and analytical ap…