Today's #arXivsummary: https://arxiv.org/abs/2308.01711 by Koyama & Nasu. Authors investigate elementary excitations at finite temperature in a localized electron model applicable to quantum spin models and Kugel-Khomskii models. Method developed which calculates the excitation spectra with the quasiparticle damping at finite temperatures. Applied to the Kitaev model under magnetic fields. #CondMat #arXiv_2308_01711