Probing Spin Dynamics in Kitaev Magnets

The honeycomb magnet α−RuCl$_3$ is a prime candidate material for realizing the Kitaev quantum spin liquid (QSL), but it shows long-range magnetic order at low temperature. Nevertheless, its broad inelastic neutron scattering (INS) response at finite frequency has been interpreted as that of a 'proximate QSL'. In this talk I will present our efforts to understand the dynamical spin response of Kitaev magnets. I will discuss the implications of different analytical and numerical calculations for experiments and highlight the importance of distinguishing finite temperature fluctuations from genuine quantum fractionalization signatures in frustrated magnets.