title: Hall viscosity and electromagnetic response.
abstract: We show that, for Galilean invariant quantum Hall states, the Hall viscosity appears in the electromagnetic response at finite wave numbers q. In particular, the leading q dependence of the Hall conductivity at small q receives a contribution from the Hall viscosity. The coefficient of the q(2) term in the Hall conductivity is universal in the limit of strong magnetic field.
authors.affiliation: Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA.
authors.forename: Carlos
authors.initials: C
authors.lastname: Hoyos
authors.forename: Dam Thanh
authors.initials: DT
authors.lastname: Son