Related Experiment Video
Updated: Jun 3, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
Topological entanglement in Abelian and non-Abelian excitation eigenstates
Z Papić1, B A Bernevig, N Regnault
1Institute of Physics, University of Belgrade, Pregrevica 118, 11 000 Belgrade, Serbia.
Abstract:
Entanglement in topological phases of matter has so far been investigated through the perspective of their ground-state wave functions. In contrast, we demonstrate that the excitations of fractional quantum Hall (FQH) systems also contain information to identify the system's topological order. Entanglement spectrum of the FQH quasihole (QH) excitations is shown to differentiate between the conformal field theory (CFT) sectors, based on the relative position of the QH with respect to the entanglement cut. For Read-Rezayi model states, as well as Coulomb interaction eigenstates, the counting of the QH entanglement levels in the thermodynamic limit matches exactly the CFT counting, and sector changes occur as non-Abelian quasiholes successively cross the entanglement cut.
Related Concept Videos
Atomic Nuclei: Nuclear Relaxation Processes
Atomic Nuclei: Nuclear Spin State Overview
Deactivation Processes: Jablonski Diagram
¹H NMR Signal Multiplicity: Splitting Patterns
Molecular Spectroscopy: Absorption and Emission
The Entropy as a State Function

