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Employing the numerically accurate multiple Davydov Ansatz in combinationwith the thermo-field dynamics approach, we delve into interplay of thefinite-temperature dynamics of holes and magnons in an antiferromagnet, whichallows for scrutinizing previous predictions from self-consistent Bornapproximation while offering, for the first time, accurate finite-temperaturecomputation of detailed magnon dynamics as a response and a facilitator to thehole motion. The study also uncovers pronounced temperature dependence of themagnon and hole populations, pointing to the feasibility of potential thermalmanipulation and control of hole dynamics. Our methodology can be applied notonly to the calculation of steady-state angular-resolved photoemission spectra,but also to the simulation of femtosecond terahertz pump-probe and othernonlinear signals for the characterization of antiferromagnetic materials.

Finite-Temperature Hole-Magnon Dynamics in an Antiferromagnet