Equilibrium angular momentum and edge current in Bose-condensed cold atom systems with k-space Berry curvature
arXiv:1506.01172 · doi:10.1103/PhysRevA.95.033628
Abstract
In this paper we study the properties of cold bosons in a two-dimensional optical lattice system where Bose-condensation occurs at a momentum point k with non-zero k-space Berry curvature. By combining results from both analytic and numerical approaches, we show that the boson system carries non-universal, temperature dependent equilibrium angular momentum and edge current at low temperatures.
References in corpus (9)
- Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
- Realization of Two-Dimensional Spin-orbit Coupling for Bose-Einstein Condensates
- Experimental realization of a two-dimensional synthetic spin-orbit coupling in ultracold Fermi gases
- Spin-orbit coupled Bose-Einstein condensates
- Observation of Vortex Pinning in Bose-Einstein Condensates
- Direct imaging of topological edge states in cold-atom systems
- Spin-orbit coupling and Berry phase with ultracold atoms in 2D optical lattices
- Berry Phase Effect on Exciton Transport and Bose Einstein Condensate
- Superfluidity of Bosons in Kagome Lattices with Frustration