Description
In a recent experiment on CoNb2O6, Coldea et. al. found for
the first time experimental evidence of the exceptional Lie
algebra E8. The emergence of this symmetry was theoretically
predicted long ago for the transverse quantum Ising chain in
the presence of a weak longitudinal field. We consider an
accurate microscopic model of CoNb2O6 and calculate
numerically the dynamical structure function using a
recently developed matrix-product state based method. The
excitation spectra contain bound states which are
characteristic to the E8 symmetry. We furthermore compare
the observed bound states to the ones found in the
transverse Ising chain in a longitudinal field.
Primary author
Mr
Jonas Kjäll
(UC Berkeley)
