The spin transport in a SU(2)-symmetric chiral spin liquid model

Chiral spin liquids are a class of spin liquids that break time-reversal and parity symmetry. Yao and Lee proposed an exactly solvable SU(2) invariant spin-1/2 model that is very similar to the Kitaev model except that there are three flavors of Majorana fermions coupled to a static gauge field. When time-reversal symmetry is broken, this model supports a chiral spin liquid phase with chiral spin modes that exist on the boundary. I will discuss edge spin transport in the Yao-Lee model when sandwiched between two spin baths with different spin biases. I also consider the possibility that spin current noise in this system may provide a signature of this phase.