What Determines the Orbital Angular Momentum in a Chiral Superfluid?

Abstract

The study of the orbital angular momentum and edge current in chiral superfluids/superconductors has been controversial. They strongly depend on details of sample boundaries and shapes, and hence experimental setups. Such dependences do not contradict the standard thermodynamics, and orbital angular momentum and edge current are not bulk intrinsic properties of a chiral superfluid/superconductor. We discuss basic properties of these quantities.