Quantum Field Theory of Vortices in Superfluid Films
  A quantum field theory, consisting of the effective action of sound waves linearly coupled to a Chern-Simons term, is proposed to describe the dynamics of vortices in a superfluid film at the absolute zero of temperature. 
Joerg P. Kottmann and Adriaan M. J. Schakel (Freie Universitaet   Berlin)