In the theory of quantum spin liquids, gauge fluctuations are emergent
excitations at low energy. The gauge magnetic field is proportional to the
scalar spin chirality, S1.(S2xS3). It is therefore highly desirable to measure
the fluctuation spectrum of the scalar spin chirality. We show that in the
Kagome lattice with a Dzyaloshinskii-Moriya term, the fluctuation in Sz which
is readily measured by neutron scattering contains a piece which is
proportional to the chirality fluctuation.Comment: 8 Pages, 2 Figure
