4 papers
Measuring the Chern-Simons invariant in quantum gases
Chang-Rui Yi, Jinlong Yu, Huan Yuan +5
Chern-Simons (CS) invariant is a fundamental topological invariant describing the topological invariance of 3D space based on the Chern-Simons field theory. To date, direct measure…
Observation of Kibble-Zurek Behavior across Topological Transitions of a Chern Band in Ultracold Atoms
Huan Yuan, Chang-Rui Yi, Jia-Yu Guo +5
The Kibble-Zurek (KZ) mechanism renders a theoretical framework for elucidating the formation of topological defects across continuous phase transitions. Nevertheless, it is not im…
Density-Dependent Gauge Field with Raman Lattices
Xiang-Can Cheng, Zong-Yao Wang, Jinyi Zhang +2
The study of the gauge field is an everlasting topic in modern physics. Spin-orbit coupling is a powerful tool in ultracold atomic systems, resulting in an artificial gauge field t…
Kibble-Zurek behavior in a topological phase transition with a quadratic band crossing
Huan Yuan, Jinyi Zhang, Shuai Chen +1
Kibble-Zurek (KZ) mechanism describes the scaling behavior when driving a system across a continuous symmetry-breaking transition. Previous studies have shown that the KZ-like scal…