Abstract
We develop the quantum hydrodynamics of inner waves in the bulk of fractional quantum Hall states. We show that the inelastic light scattering by inner waves is a sole effect of the gravitational anomaly. We obtain the formula for the oscillator strength or mean energy of optical absorption expressed solely in terms of an independently measurable static structure factor. The formula does not explicitly depend on a model interaction potential.
- Received 20 August 2017
DOI:https://doi.org/10.1103/PhysRevLett.120.086601
© 2018 American Physical Society
Physics Subject Headings (PhySH)
Condensed Matter, Materials & Applied Physics