Quenching the Kitaev honeycomb model

Louk Rademaker

doi:10.21468/SciPostPhys.7.5.071

paper

Quenching the Kitaev honeycomb model

arXiv:1710.09761 · doi:10.21468/SciPostPhys.7.5.071

Abstract

I studied the non-equilibrium response of an initial NÃ©el state under time evolution with the Kitaev honeycomb model. With isotropic interactions ( $J_{x} = J_{y} = J_{z}$ ) the system quickly loses its antiferromagnetic order and crosses over into a steady state valence bond solid, which can be inferred from the long-range dimer correlations. There is no signature of a dynamical phase transition. Upon including anisotropy ( $J_{x} = J_{y} \neq = J_{z}$ ), an exponentially long prethermal regime appears with persistent magnetization oscillations whose period derives from an effective toric code.

17 pages, 7 figures. Resubmission to SciPost