Edge Transport in 2D Cold Atom Optical Lattices

V. W. Scarola, S. Das Sarma
2007 Physical Review Letters  
We theoretically study the observable response of edge currents in two dimensional cold atom optical lattices. As an example we use Gutzwiller mean-field theory to relate persistent edge currents surrounding a Mott insulator in a slowly rotating trapped Bose-Hubbard system to time of flight measurements. We briefly discuss an application, the detection of Chern number using edge currents of a topologically ordered optical lattice insulator.
doi:10.1103/physrevlett.98.210403 pmid:17677753 fatcat:f26apkexkjbyxf3guytnq34c24