Fig. 1
From: Light-induced evaporative cooling of holes in the Hubbard model
Spectral functions before and after photo-excitation. Panel a illustrates the initial state in the first setup: a quarter-filled Hubbard model (red) and core states of bandwidth 2 (black), which are treated as a noninteracting fermion bath. Panel b shows the second set-up: a 3/8 filled Hubbard model (red) and a narrow core band of width 0.4 (black). In both cases, the interaction parameters are \({U}_{{\rm{system}}}=6\), \({U}_{{\rm{core}}}=0\), and the initial temperature is \(T=0.2\). Panel c illustrates the evolution of the spectral function (lines) and occupation (shaded region) with pulse duration in the first setup, for constant driving frequency \(\Omega =6\) and amplitude \({a}_{\max }=0.8\). Panel d shows analogous results for the second set-up and a chirped pulse with \({\Omega }_{{\rm{in}}}=6.6\) and amplitude \({a}_{\max }=0.1625\).
